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All Patents of Type: electrical devices
Patents 1 - 15 of 1321
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NumberDatePatenteeTitleType
8,736XMar. 31, 1835D. HarringtonGalvanic electricity applied to cure diseaseselectric batteries
132Feb. 25, 1837T. DavenportImprovement in propelling machinery by magnetism and electro-magnetismDC motors
809Jun. 27, 1838N. WalklyImproved mode of changing the poles of electro-magnetselectric motors
910Sep. 08, 1838S. StimpsonImproved apparatus for the application of electro-magnetism as a motive powerelectric motors
17,355May 19, 1857M.G. Farmer, W.F. ChanningElectromagnetic Fire Alarm Telegraph for Citestelegraphic apparatus
21,492Sep. 14, 1858J.M. Batchelder, M.G. FarmerTelegraph Insulatortelegraphic apparatus
26,558Dec. 27, 1859G.W. BeardsleeImproved magneto-electric machineelectric motors
CS-104Aug. 06, 1862W.S. MorrisComposition for Galvanic Batterieselectric batteries
96,332Nov. 02, 1869G. LittleImprovement in Electro-Magnetic Motorselectric motors
CA-686Nov. 05, 1870H. WoodImprovement in electro magnetic machines and magnetselectric motors
CA-919Apr. 11, 1871A. Ross, M.H. UtleyImprovements on electro-magnetic motorselectric motors
138,855May 13, 1873S.C. CarterElectro-Magnetic Motorselectric motors
159,028Jan. 26, 1875G.F. GreenImprovement in electro-magnetic dental toolselectrical devices
171,087Dec. 14, 1875J. BishopElectro Magnetic Engineselectric motors
195,751Oct. 02, 1877T.A. EdisonAutomatic Telegraphtelegraphic apparatus
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