All Patents in class 388 |
Patents 1 -
15
of 49
|
Number | Date | Patentee | Title | Type |
251,541 | Dec. 27, 1881 | T.A. Edison | Electric Magnetic Motor | motor controls |
264,981 | Sep. 26, 1882 | E. Weston | System for the Electrical Transmission of Power | electric distribution systems |
272,365 | Feb. 13, 1883 | E. Weston | System for the Electrical Transmission of Power | electric distribution systems |
275,842 | Apr. 17, 1883 | J.C. Cebrian, E.J. Molera | Speed Regulator and Reversing Device for Electric Motors | motor regulators |
284,382 | Sep. 04, 1883 | C.L. Clarke | Circuit and Apparatus for Electric Temperature and Pressure Indicator | vacuum and pressure gauges |
298,550 | May 13, 1884 | C.G. Burke | Regulator for Electric Motors | motor regulators |
313,546 | Mar. 10, 1885 | F.J. Sprague | Electric Dynamic Motor | DC motors |
315,181 | Apr. 07, 1885 | F.J. Sprague | Electric Motor and Generator | electric motors |
335,863 | Feb. 09, 1886 | J. Weis | Electric Motor | motor brush holders |
353,367 | Nov. 30, 1886 | A.W. Meston | Governor for electric motors | motor regulators |
372,231 | Oct. 25, 1887 | A.W. Meston | Regulator for electric motors | electric motors |
390,820 | Oct. 09, 1888 | N. Tesla | Regulator for Alternate-Current Motors | |
448,326 | Mar. 17, 1891 | R. Eickemeyer | Method of and apparatus for developing mechanical motion from electrical energy | |
485,620 | Nov. 08, 1892 | J.P. Fiske | Electric Motor Controller | motor controls |
500,274 | Jun. 27, 1893 | A.B. See, W.L. Tyler | Regulating Switch for Electric Elevators | motor controls |