Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS

Montage of images and link description. Edison's Miracle of Light Imagemap: linked to kids and home
The Film and More
Imagemap(text links below) of menu items
The American Experience
Transcript
The Film & More
Reference
Primary Source Documents | Further Reading

This complete list of Edison's patents is courtesy of The Thomas A. Edison Papers, a project sponsored by Rutgers University. To see this list organized by execution date, patent number, and subject, and to access PDF files of every one of the 1,093 patents, visit the site's Thomas Edison's Patents pages.

This list is organized by patent number.
No.ExecutedAppliedIssuedPatentTitle
686.12/01/9012/03/9004/11/99622,843Phonograph
748.03/29/9803/31/9806/06/99626,460Filament for Incandescent Lamps and Process of Manufacturing Same
737.05/14/9707/16/9711/21/99637,327Rolls
760.04/10/9904/24/9901/16/00641,281Expanding Pulley
758.02/24/9902/27/9902/20/00643,764Method of Reheating Compressed Air for Industrial Purposes
749.04/11/9805/23/9805/08/00648,933Drier
755.02/06/9903/17/9905/08/00648,934Process of Screening or Sizing Very Fine Materials
763.10/27/9910/28/9905/08/00648,935Apparatus for Duplicating Phonograph-Records
762.09/12/9909/21/9906/26/00652,457Phonograph
774.04/30/0005/03/0008/07/00655,480Phonographic Reproducing Device
775.04/30/0005/04/0009/11/00657,527Process of Making Metallic Duplicate Phonograph-Records
765.12/09/9912/12/9909/18/00657,922Apparatus for Reheating Compressed Air for Industrial Purposes
754.09/19/9809/24/9810/09/00659,389Electric Meter
759.03/23/9909/16/9910/23/00660,293Electric Meter
767.01/09/0001/11/0010/30/00660,845Apparatus for Sampling, Averaging, Mixing, and Storing Materials in Bulk
750.04/11/9805/23/9811/06/00661,238Machine for Forming Pulverized Material into Briquets
768.01/09/0001/11/0011/20/00662,063Process of Sampling, Averaging, Mixing, and Storing Materials in Bulk
756.02/06/9903/17/9912/14/00663,015Electric Meter
742.06/10/9706/29/9702/05/01667,201Flight Conveyer
776.04/30/0005/08/0002/05/01667,202Apparatus for Duplicating Phonograph-Records
777.04/30/0005/08/0002/05/01667,662Process of Duplicating Phonograph-Records
743.06/10/9706/29/9704/02/01671,314Lubricating Journal-Bearings
744.06/10/9706/29/9704/02/01671,315Conveyer
770.02/23/0003/07/0004/02/01671,316Apparatus for Screening or Rescreening Fine Materials
771.03/28/0003/31/0004/02/01671,317Method of Screening or Rescreening Fine Materials
738.05/14/9707/16/9704/23/01672,616Method of Breaking Rock
782.08/01/0008/09/0004/23/01672,617Apparatus for Breaking Rock
751.04/11/9805/23/9805/14/01674,057Grinding or Crushing Rolls
736.05/14/9706/12/9705/28/01675,056Magnetic Separator
745.06/10/9706/29/9705/28/01675,057Apparatus for Screening Pulverized Material
783.08/10/0008/18/0006/11/01676,225Phonographic Recording Apparatus
739.05/14/9707/16/9706/18/01676,618Magnetic Separator
766.01/03/0001/09/0006/18/01676,840Magnetic Separating Apparatus
780.06/11/0007/02/0006/18/01676,841Magnetic Separating Apparatus
792.06/17/0106/20/0107/16/01678,722Reversible Galvanic Battery
769.01/24/0001/31/0007/30/01679,500Apparatus for Screening or Sizing Very Fine Materials
781.07/23/0008/18/0008/13/01680,520Process of Making Duplicate Phonograph-Records
785.10/15/0010/31/0010/08/01684,204Reversible Galvanic Battery
793.06/17/0106/20/0110/08/01684,205Reversible Galvanic Battery
764.11/24/9912/06/9911/05/01685,911Apparatus for Reheating Compressed Air for Industrial Purposes
757.02/10/9903/17/9912/10/01688,610Phonograph Recording Apparatus
794.06/17/0106/20/0102/04/02692,507Reversible Galvanic Battery
788.02/18/0103/05/0105/13/02700,136Reversible Galvanic Battery
790.02/23/0103/05/0105/13/02700,137Reversible Galvanic Battery
795.06/17/0106/20/0106/03/02701,804Reversible Galvanic Battery
784.09/28/0010/15/0006/24/02703,051Electric Meter
752.04/11/9805/23/9807/01/02703,562Apparatus for Bricking Pulverized Material
747.03/21/9803/24/9807/01/02703,774Reproducer for Phonographs
753.04/11/9805/23/9807/08/02704,010Apparatus for Concentrating Magnetic Iron Ores
787.12/22/0001/08/0107/08/02704,303Reversible Galvanic Battery
789.02/23/0103/01/0107/08/02704,304Reversible Galvanic Battery
791.05/10/0105/17/0107/08/02704,305Electrode for Batteries
796.06/17/0106/20/0107/08/02704,306Reversible Galvanic Battery
797.10/24/0111/08/0107/29/02705,829Reproducer for Sound-Records
746.02/21/9803/05/9811/11/02713,209Process of Duplicating Phonograms
778.05/15/0006/16/0011/18/02713,863Process of Coating Phonograph-Records
803.11/13/0211/28/0203/03/03721,682Reversible Galvanic Battery
804.11/13/0211/28/0203/03/03721,870Funnel for Filling Storage-Battery Cans or Analogous Purposes
813.12/18/0201/09/0303/10/03722,502Means for Handling Cable-Drawn Cars on Inclines
805.11/13/0211/28/0203/24/03723,449Electrode for Storage Batteries
806.11/13/0211/28/0203/24/03723,450Reversible Galvanic Battery
814.12/18/0201/09/0303/31/03724,089Means for Operating Motors in Dust-Laden Atmospheres
761.06/15/9907/01/9905/05/03727,116Grinding-Rolls
801.09/29/0210/03/0205/05/03727,117Reversible Galvanic Battery
802.10/13/0210/21/0205/05/03727,118Process of Manufacturing Electrolytically-Active Finely-Divided Iron
800.02/11/0202/14/0207/28/03734,522Process of Nickel-Plating
815.12/18/0201/09/0301/19/04750,102Electrical Automobile
807.11/13/0211/28/0203/15/04754,755Compressing-Dies
825.05/25/0305/29/0303/15/04754,756Process of Separating Ores from Magnetic Gangue
808.11/13/0211/28/0203/15/04754,858Storage-Battery Tray
809.11/13/0211/28/0203/15/04754,859Reversible Galvanic Battery
816.12/18/0201/09/0304/26/04758,432Stock-House Conveyer
772.04/10/0004/19/0005/10/04759,356Method of Burning Portland-Cement Clinker, &c.
773.04/10/0004/19/0005/10/04759,357Apparatus for Burning Portland-Cement Clinker &c.
779.06/11/0006/21/0005/10/04759,358Magnetic Separating Apparatus
810.11/13/0211/28/0207/05/04764,183Method of Separating Mechanically-Entrained Globules from Gases
833.11/16/0311/18/0308/09/04766,815Primary Battery
827.07/30/0308/01/0308/09/04767,216Apparatus for Vacuously Depositing Metals
837.06/08/0406/13/0408/16/04767,554Method of Rendering Storage-Battery Gases Non-Explosive
822.01/30/0303/05/0310/18/04772,647Photographic Film for Moving-Picture Machines
829.08/25/0308/28/0310/18/04772,648Vehicle-Wheel
826.07/20/0307/22/0311/22/04775,600Rotary Cement-Kiln
824.04/27/0305/04/0311/29/04775,965Dry Separator
846.07/18/0408/16/0403/21/05785,297Gas-Separator for Storage Batteries
821.01/30/0302/11/0305/23/05790,351Process of Duplicating Phonographic Records
828.07/30/0308/01/0308/08/05796,629Lamp-Guard
843.07/12/0407/21/0408/22/05797,845Sheet Metal for Perforated Pockets of Storage Batteries
839.06/24/0406/29/0410/03/05800,800Phonograph-Record and Method of Making the Same
812.11/13/0212/05/0210/24/05802,631Apparatus for Burning Portland-Cement Clinker
857.03/17/0503/20/0511/14/05804,799Apparatus for Perforating Sheet Metal
852.10/29/0411/02/0402/27/06813,490Cement-Kiln
870.05/15/0505/16/0502/27/06813,491Pocket-Filling Machine
850.09/26/0409/29/0404/10/06817,162Process of Treating Alkaline Storage Batteries
848.08/10/0409/28/0405/22/06821,032Storage Battery
840.06/24/0406/29/0405/29/06821,622Process of Cleaning Metallic Surfaces
855.11/01/0411/02/0405/29/06821,623Storage-Battery-Filling Apparatus
853.10/29/0411/02/0405/29/06821,624Gas-Separator for Storage Batteries
854.10/29/0411/05/0405/29/06821,625Process of Treating Alkaline Storage Batteries
859.03/29/0503/30/0505/29/06821,626Process of Making Metallic Films or Flakes
860.03/29/0503/30/0505/29/06821,627Process of Making Metallic Flakes or Scales
874.05/20/0505/26/0505/29/06821,628Process for Making Conducting-Films
799.12/24/0101/02/0207/31/06827,089Calcining-Furnace
844.07/12/0407/21/0407/31/06827,297Alkaline Battery
861.03/29/0503/30/0508/07/06827,717Process of Making Composite Metals
823.01/30/0303/05/0309/18/06831,269Storage-Battery Electrode-Plate
798.10/24/0111/08/0109/25/06831,606Sound-Recording Apparatus
817.12/18/0201/09/0310/02/06832,046Automatic Weighing and Mixing Apparatus
862.03/29/0503/30/0512/25/06839,371Method of Coating Active Material with Flake-Like Conducting Material
869.04/28/0504/29/0512/25/06839,372Phonograph Record or Blank
820.01/22/0301/29/0301/22/07841,677Apparatus for Grinding and Separating Fine Materials
845.07/12/0407/21/0403/19/07847,746Electrical Welding Apparatus
886.01/19/0601/20/0604/16/07850,881Composite Metal
830.10/03/0310/05/0304/23/07850,912Process of Making Articles by Electroplating
883.12/06/0512/07/0504/23/07850,913Secondary Battery
811.11/13/0211/28/0205/07/07852,424Secondary Battery
863.03/29/0503/30/0505/21/07854,200Process of Making Storage-Battery Electrodes
907.02/23/0703/06/0706/04/07855,562Diaphragm for Talking-Machines
831.10/03/0310/05/0306/18/07857,041Can or Receptacle for Storage Batteries
864.03/29/0503/30/0506/25/07857,929Storage-Battery Electrode
885.01/09/0601/10/0607/02/07858,862Primary and Secondary Battery
866.04/26/0504/28/0507/16/07860,195Storage-Battery Electrode
838.06/20/0406/28/0407/23/07861,241Portland Cement and Process of Manufacturing the Same
847.08/10/0408/16/0407/23/07861,242Can or Receptacle for Storage Batteries
915.06/11/0706/14/0707/30/07861,819Discharging Apparatus for Belt Conveyers
867.04/26/0504/28/0508/06/07862,145Process of Making Seamless Tubular Pockets or Receptacles for Storage Battery Electrodes
733.05/16/9605/19/9609/10/07865,367Fluorescent Electric Lamp
905.01/18/0701/19/0709/10/07865,687Process of Making Nickel Films
903.01/11/0701/19/0709/10/07865,688Process of Making Metallic Films or Flakes
858.03/23/0503/24/0511/05/07870,024Apparatus for Producing Perforated Strips
786.10/15/0010/31/0011/19/07871,214Reversible Galvanic Battery
818.12/18/0201/13/0312/10/07873,219Feed-Regulator for Grinding-Machines
835.11/20/0311/23/0312/10/07873,220Reversible Galvanic Battery
912.05/08/0705/10/0701/14/08876,445Electrolyte for Alkaline Storage Batteries
841.06/24/0406/29/0402/18/08879,612Alkaline Storage Battery
856.02/16/0503/01/0502/25/08879,859Apparatus for Producing Very Thin Sheet Metal
842.06/24/0406/29/0402/25/08880,484Process of Producing Very Thin Sheet Metal
881.10/31/0511/02/0503/03/08880,978Electrode Element for Storage Batteries
882.10/31/0511/02/0503/03/08880,979Method of Making Storage-Battery Electrodes
865.03/29/0503/30/0503/17/08882,144Storage-Battery Electrode
898.11/23/0611/27/0606/16/08890,625Apparatus for Grinding Coal
921.02/04/0802/06/0808/25/08896,811Metallic Film for Use with Storage-Battery Electrodes and Process of Preparing the Same
925.03/13/0803/18/0808/25/08896,812Storage Battery
895.11/02/0611/03/0609/08/08898,404Process of Making Articles by Electroplating
836.12/08/0312/10/0309/15/08898,633Filling Apparatus for Storage-Battery Jars & c.
922.02/04/0802/06/0801/12/09909,167Waterproofing-Paint for Portland-Cement Buildings
933.05/27/0806/01/0801/12/09909,168Waterproofing Fibers and Fabrics
934.05/27/0806/01/0801/12/09909,169Waterproofing-Paint for Portland-Cement Structures
918.06/18/0706/20/0701/19/09909,877Telegraphy
884.12/06/0512/07/0503/02/09914,342Storage Battery
913.05/15/0705/17/0703/02/09914,343Process of Making Storage-Battery Electrodes
890.07/13/0607/14/0603/02/09914,372Process for Making Thin Metallic Flakes
892.09/11/0609/13/0606/01/09923,633Shaft-Coupling
894.10/22/0610/24/0608/10/09930,946Apparatus for Burning Portland Cement
947.02/15/0903/27/0908/10/09930,947Gas-Purifier
896.11/16/0611/26/0608/10/09930,948Apparatus for Burning Portland Cement
897.11/16/0611/26/0609/10/09930,949Apparatus for Burning Portland Cement
902.01/11/0701/17/0710/05/09936,267Feed Mechanism for Phonographs and Other Machines
878.10/12/0510/14/0510/12/09936,433Tube-Filling and Tamping Machine
904.01/17/0701/18/0710/12/09936,525Process of Making Metallic Films or Flakes
906.02/08/0703/08/0711/09/09939,817Cement-Kiln
909.02/25/0703/16/0711/16/09939,992Phonographic Recording and Reproducing Machine
923.02/04/0802/06/0811/16/09940,635Electrode Element for Storage Batteries
911.02/25/0704/02/0711/30/09941,630Process and Apparatus for Artificially Aging or Seasoning Portland Cement
871.05/20/0505/24/0512/21/09943,663Horn for Talking-Machines
834.11/16/0311/18/0312/21/09943,664Sound-Recording Apparatus
928.03/13/0803/23/0812/28/09944,481Process and Apparatus for Artificially Aging or Seasoning Portland Cement
929.03/13/0803/23/0801/18/10946,540Storage Battery
932.03/13/0804/17/0802/01/10947,806Automobile
851.09/28/0409/29/0402/08/10948,542Method of Treating Cans of Alkaline Storage Batteries
899.11/28/0612/03/0602/08/10948,558Storage-Battery Electrode
951.09/08/0909/13/0902/22/1040,527Design for a Phonograph-Cabinet
872.05/20/0505/24/0502/22/10950,226Phonographic Recording Apparatus
877.10/10/0510/12/0502/22/10950,227Apparatus for Making Metallic Films or Flakes
917.06/11/0706/26/0704/12/10954,789Sprocket-Chain Drive
879.10/12/0510/14/0504/26/10956,317Tube-Sealing Machine
832.11/11/0311/13/0306/21/10962,081Apparatus for Recording Sounds
891.09/04/0609/07/0606/28/10962,822Crushing-Roll
893.09/11/0609/18/0606/28/10962,823Crushing-Rolls
873.05/20/0505/24/0507/05/10963,362Apparatus for Recording or Reproducing Sounds
888.02/24/0603/19/0607/12/10964,096Process of Electroplating
942.11/16/0811/19/0807/12/10964,097Device for Viewing Moving Pictures
900.12/28/0601/03/0707/12/10964,221Sound-Record
880.10/16/0510/17/0508/16/10967,178Tube-Forming Machine
849.08/23/0408/30/0409/20/10970,615Method and Apparatus for Making Sound-Records
939.08/20/0811/16/0809/20/10970,616Flying-Machine
908.02/23/0704/04/0711/08/10975,339Process of Duplicating Talking-Machine Records
930.03/13/0803/23/0811/08/10975,340Phonograph-Reproducer
868.04/26/0504/28/0511/22/10976,791Storage-Battery Electrode
963.05/19/1005/24/1011/22/10976,792Storage Battery
916.06/11/0706/14/0705/02/11991,433Bucket Conveyer
935.06/08/0806/11/0805/23/11993,294Device for Feeding Pulverulent Material
940.10/10/0810/14/0806/27/11996,070Rotary Kiln
926.03/13/0803/18/0807/04/11996,625Phonograph-Reproducer
927.03/13/0803/20/0808/08/11999,762Storage Battery and Process of Treating the Same
946.01/27/0902/06/0909/05/111,002,504Crushing and Separating Fine Materials
978.01/25/1101/27/1109/05/111,002,505Composition for Sound-Records and Other Objects
875.09/14/0509/15/0512/19/111,012,250Recording-Telephone
964.05/19/1005/24/1012/26/111,012,828Storage Battery
931.03/13/0803/23/0801/09/121,013,869Bearing
819.12/18/0201/13/0301/16/121,014,818Giant Rolls
993.06/16/1106/21/1102/06/121,016,874Means and Method for Preventing Depletion of Electrolyte
995.07/24/1107/28/1102/06/121,016,875Electroplating Apparatus
936.06/08/0806/11/0803/05/121,019,440Phonograph-Reproducer
960.04/14/1004/20/1003/05/121,019,441Sound-Recording Apparatus
944.12/21/0812/29/0803/19/121,020,485Phonograph-Reproducer
901.12/28/0601/03/0704/30/121,024,839Phonographic Recording-Stylus
979.01/25/1101/27/1107/30/121,034,002Storage Battery
980.01/25/1101/27/1107/30/121,034,003Battery-Cell Container
956.11/01/0911/03/0908/20/121,036,470Phonographic Apparatus
966.05/31/1006/06/1008/20/121,036,471Storage Battery
1012.07/11/1207/13/1208/27/1242,934Design for a Cabinet
919.11/19/0711/22/0710/22/121,041,756Conveyer
961.05/02/1005/12/1010/22/121,041,983Phonograph-Stylus
937.06/08/0806/11/0812/03/121,046,159Phonograph-Reproducer
965.05/31/1006/02/1012/03/121,046,414Phonograph Determining Device
950.08/07/0908/12/0901/14/131,050,355Phonograph
970.06/30/1007/01/1001/14/131,050,436Apparatus for Producing Rubber Strips
989.05/01/1105/09/1101/14/131,050,629Art of Separating Copper from Other Metals
990.05/12/1105/18/1101/14/131,050,630Art of Separating Copper from Other Metals
952.10/26/0910/28/0902/11/131,052,656Phonograph-Reproducer
996.11/28/1112/01/1103/11/131,055,524Dumping Mechanism
991.05/16/1105/18/1103/11/131,055,621Reproducer
957.12/04/0912/08/0903/18/131,056,517Means for Reproducing Sound
889.05/07/0605/08/0604/22/131,059,661Manufacture of Portland Cement
887.01/24/0601/27/0606/24/131,065,597Cement-Burning Kiln
1000.12/30/1101/11/1209/16/131,073,107Storage Battery
910.02/25/0703/16/0711/11/131,078,264Phonographic Recording or Reproducing Apparatus
941.10/10/0810/14/0811/11/131,078,265Process of Making Phonograph-Records
984.04/03/1104/05/1111/11/131,078,266Sound-Box
971.06/30/1007/01/1001/06/141,083,353Production of Perforated Strips
981.01/25/1101/27/1101/06/141,083,354Insulating Compound
986.04/07/1104/08/1101/06/141,083,355Art of Forming Chemical Compounds
987.04/07/1104/08/1101/06/141,083,356Storage Battery
973.10/04/1010/07/1006/09/141,099,241Rectifier
953.10/26/0910/28/0906/09/141,099,346Phonograph-Reproducer
954.10/26/0910/28/0906/09/141,099,347Phonograph-Reproducer
955.10/28/0910/29/0906/09/141,099,348Phonograph-Reproducer
1001.01/02/1201/06/1206/09/141,099,349Method of Making Sound-Record Molds
920.11/25/0711/29/0709/11/141,106,444Fuel-Feeding Apparatus
977.12/07/1012/09/1009/15/141,110,382Sound-Modifier
959.03/19/1003/23/1009/15/141,110,428Process of Forming Phonograph-Styli
1003.01/19/1201/20/1209/29/141,111,999Phonograph-Record
969.06/13/1006/17/1010/27/141,115,463Electrode Element
992.06/08/1106/10/1111/24/141,118,114Method of Making Molds for Sound-Records
975.11/09/1011/14/1012/01/141,119,141Sound-Reproducer
985.04/03/1104/05/1112/01/141,119,142Sound-Record
945.12/22/0812/29/0801/05/151,123,261Mold for Concrete Construction
968.06/07/1006/09/1001/26/151,126,428Sound-Recording Apparatus
994.06/20/1106/22/1103/02/151,130,156Machine for Shaving Sound Records or Blanks
1022.06/13/1306/16/1305/04/151,138,360Method of Presenting the Illusion of Scenes in Colors
974.10/17/1010/20/1006/08/151,142,507Sound-Recording Apparatus
1002.01/12/1201/17/1206/22/151,143,818Charging Storage Batteries
998.12/19/1112/20/1107/13/151,146,413Method of Producing Tablets for Sound-Records
1026.08/26/1408/27/1407/13/151,146,414Method of Making Phonograph-Records
943.11/21/0811/25/0808/03/151,148,832Means for Utilizing the Waste Heat in Kilns
876.09/28/0509/29/0509/07/151,152,613Method of Burning Portland-Cement Clinker
958.01/26/1001/27/1009/07/151,152,614Phonographic Recording Apparatus
1009.06/10/1206/13/1209/07/151,152,615Alternating-Current-Rectifying System
1010.06/10/1206/13/1209/07/151,152,616Contact for Electrical Apparatus
948.03/02/0903/03/0911/02/151,158,659Phonograph-Record
949.03/02/0903/03/0911/02/151,158,660Phonograph-Record
1015.09/12/1209/16/1211/02/151,158,661Phonograph or Talking-Machine
914.05/28/0705/31/0712/07/151,163,329Filament for Incandescent Electric Lamps
988.04/07/1104/08/1101/11/161,167,484Production of Nickel Hydroxid
1005.04/23/1204/30/1201/11/161,167,485Storage Battery
972.07/02/1007/07/1001/11/161,167,637Method of Utilizing Waste Heat in Kilns
1007.05/21/1205/23/1201/11/161,167,638Means for Concentrating Ores
967.05/31/1006/06/1004/04/161,178,062Moving-Picture Apparatus
1008.05/31/1206/07/1204/04/161,178,063Receptacle-Filling Machine
924.02/04/0802/08/0805/16/161,182,897Apparatus for Recording and Reproducing Motion and Sounds
976.12/05/1012/07/1005/23/161,184,332Phonograph or Talking-Machine
982.02/15/1102/17/1105/23/161,184,333Phonograph or Talking-Machine
1014.08/09/1208/12/1205/23/161,184,334Phonograph or Talking-Machine
1004.02/15/1202/16/1207/04/161,190,133Means for Recording Sounds
1006.05/20/1205/23/1207/25/161,192,400Electrical System for Automobiles
1017.10/25/1210/26/1209/12/161,197,723Coating Apparatus
1027.08/27/1408/31/1409/19/161,198,426Production of Electrode Elements
1018.10/25/1210/26/1210/17/161,201,448Coating Apparatus
1024.04/21/1404/25/1410/17/161,201,449Sound-Modifying Device
983.03/22/1103/24/1111/14/161,204,420Sound-Box
962.05/13/1005/24/1012/05/161,207,382Primary Battery
1020.01/29/1301/30/1312/05/161,207,383Sound-Record Tablet
938.08/10/0808/13/0803/13/171,219,272Process of Constructing Concrete Buildings
997.12/12/1112/30/1104/10/171,221,981Alternating-Current Rectifier
1016.09/12/1209/16/1207/24/171,234,450Celluloid Record-Blank
1019.10/25/1210/26/1207/24/171,234,451Mold or Transfer Plate
1040.06/01/1706/07/1712/04/171,248,468Celluloid Record-Blank
1013.07/27/1207/31/1202/05/181,255,517Starting and Current-Supplying System for Automobiles
1011.06/19/1206/24/1205/21/181,266,778Process of Making Screens for Projection
1029.10/13/1410/16/1405/21/181,266,779Electric Safety-Lantern
1039.01/16/1701/20/1705/21/181,266,780Storage Battery
999.12/20/1112/22/1108/13/181,275,232Production of Finely-Divided Metals
1037.09/21/1610/02/1611/05/181,283,706Para-phenylene-di-amin Substance and Process Relating Thereto
1021.02/28/1303/06/1312/03/181,286,259Means for Recording Sounds
1023.11/21/1312/02/1301/07/191,290,138Friction Speed-Governor
1041.06/26/1706/29/1701/21/191,292,277Swaging-Machine
1032.01/11/1601/24/1603/11/191,297,294Projectile
1025.08/06/1408/10/1404/08/191,299,693Storage Battery
1035.02/05/1602/12/1604/15/191,300,708Projectile
1034.02/04/1602/12/1604/15/191,300,709Projectile
1036.03/04/1603/06/1608/05/191,311,955Tube Filling and Tamping Machine
1033.01/12/1601/17/1611/25/191,323,218Method and Means for Improving the Rendition of Musical Compositions
1028.10/09/1410/13/1412/30/191,326,330Mold for Sound-Records
1038.01/16/1701/18/1712/30/191,326,854Apparatus for the Production of Concrete Structures
1030.08/21/1508/26/1506/01/201,342,326Composition of Matter for Sound-Records or the Like and Process of Making the Same
1047.06/18/1906/21/1911/23/201,359,972Electroplating
1031.12/08/1512/13/1501/04/211,364,358Battery-Tray
1053.09/24/1909/29/1901/04/211,364,359Protecting-Varnish for Electrodes of Electrolytic Cells
1048.06/24/1907/03/1902/22/211,369,271Cleaning of Metallic Surfaces
1050.08/01/1908/05/1902/22/211,369,272Process of Molding
1046.06/12/1906/17/1903/15/211,371,414Nickel-Plating
1043.01/14/1901/18/1905/10/211,377,192Production of Molded Articles
1044.01/15/1901/23/1905/10/211,377,193Production of Molded Articles
1059.06/14/2006/16/2005/10/211,377,194Storage Battery
1052.09/13/1909/16/1905/24/211,379,088Storage Battery
1054.09/30/1910/04/1905/24/211,379,089Production of Thin Metallic Sheets or Foils
1055.11/03/1911/06/1908/02/211,386,095Electrode Element for Galvanic Batteries and Method of Producing ame
1051.08/28/1909/05/1901/10/221,402,751Storage-Battery Electrode and the Production of Same
1056.11/28/1912/02/1903/21/221,410,391Protective Coating for Steel and Iron
1045.04/24/1904/30/1904/04/221,411,425Production of Molded Articles
1049.06/25/1907/03/1905/23/221,417,463Mold
1060.07/08/2007/16/2005/23/221,417,464Production of Thin Metal Sheets or Foils
1042.10/23/1810/26/1808/08/221,425,183Transmitter
1061.08/23/2008/26/2008/08/221,425,184Production of Thin Metal Sheets or Foils
1057.12/09/1912/11/1908/08/221,425,458Stylus Mounting
1058.12/09/1912/11/1905/29/231,456,687Stylus Mounting
1063.09/26/2109/28/2104/01/241,488,480Regeneration of Alkaline Storage-Battery Elements
1065.04/25/2204/26/2204/01/241,488,481Regeneration of Storage-Battery Elements
1062.12/31/2001/05/2104/08/241,489,240Voltaic Battery and the Production of Electrode Elements Therefor
1064.02/08/2202/11/2204/29/241,492,023Sound Record
1067.02/05/2302/08/2305/27/241,495,580Method of Producing Chlorinated Rubber
1075.10/15/2410/17/2412/16/2466,227Design for a Grille for Phonograph Cabinets
1076.10/15/2410/17/2412/16/2466,228Design for a Grille for Phonograph Cabinets
1074.02/25/2403/12/2402/17/251,526,326Storage Battery
1069.05/23/2305/25/2307/21/251,546,573Production of Disk Phonograph Records
1070.05/23/2305/25/2311/03/251,559,562Storage Battery
1077.10/15/2410/17/2412/22/2569,068Design for a Phonograph Cabinet
1078.10/15/2410/17/2403/16/2669,688Design for a Phonograph Cabinet
1079.10/15/2410/17/2403/16/2669,689Design for a Phonograph Cabinet
1072.11/12/2311/14/2305/11/261,583,783Centrifugal Speed Governor
1073.02/20/2402/26/2409/07/261,599,121Production of Depolarizing Agent for Voltaic Battery
1071.06/28/2307/06/2309/21/261,600,722Mounting for Diamonds and the Like
1080.01/29/2501/31/2510/11/271,644,670Cabinet
1083.07/17/2507/24/2511/15/271,649,579Storage-Battery Electrode Element and Production Thereof
1068.05/11/2305/14/2311/29/271,651,196Storage Battery
1066.06/23/2206/28/2207/24/281,678,246Production of Alkali-Metal Compounds from Silicates Containing Them
1088.10/01/2610/05/2611/06/281,690,159Method of Producing Sound-Record Tablets
1081.02/02/2502/13/2502/19/291,702,935Receiving Apparatus for Radio and Telephone Circuits
1086.02/01/2602/13/2604/09/291,708,692Phonograph
1085.02/01/2602/10/2604/30/291,711,265Phonograph Reproducer
1089.10/11/2710/12/2708/06/291,723,609Apparatus for Producing Storage-Battery Electrode Elements
1090.11/25/2711/30/2712/17/291,740,079Extraction of Rubber from Plants
1082.04/28/2504/30/2501/21/301,744,533Mounting for Diaphragms of Sound Boxes
1084.01/25/2601/29/2601/21/301,744,534Production of Molded Articles
1092.12/13/2812/15/2811/03/311,829,856Dynamo-Electric Machine
1087.08/13/2608/14/2612/15/311,836,066Electroplating Apparatus
1091.10/04/2810/06/2806/14/321,862,740Production of Molded Articles
1093.01/06/3101/09/3105/16/331,908,830Holder for Article to be Electroplated



Program Description | Enhanced Transcript | Reference

The Film & More | Special Features | Timeline | Gallery | Teacher's Guide
The American Experience | Kids | Feedback | Search | Shop | Subscribe

©  New content 1999-2000 PBS Online / WGBH

Exclusive Corporate Funding is provided by: