All Patents in class 310/40R |
Patents 16 -
30
of 33
|
Number | Date | Patentee | Title | Type |
447,920 | Mar. 10, 1891 | N. Tesla | Method of operating arc lamps | electric arc lamps |
469,515 | Feb. 23, 1892 | M. von Dolivo-Dobrowolsky | Electric machine | electric distribution systems |
491,695 | Feb. 14, 1893 | J.J. Wood | Alternating Current Dynamo Electric Machine | electric generators |
518,561 | Apr. 17, 1894 | H.P. Brown | Electric motor | electric motors |
534,079 | Feb. 12, 1895 | H.F. Parshall | Armature for dynamo-electric machines | motor armatures |
570,424 | Oct. 27, 1896 | S.G. Brinkman | Electric motor | electric motors |
620,609 | Mar. 07, 1899 | F. Schwedtmann, E.S. Pillsbury | Motor | electric motors |
672,419 | Apr. 16, 1901 | F.A. Johnson | Means for Controlling Electric Motors | motor controls |
921,914 | May 18, 1909 | A.H. Timmerman | Dynamo-electric machine | electric motors |
1,104,784 | Jul. 28, 1914 | G. Dunn | Dynamo-electric machine frame | electric motors |
1,915,449 | Jun. 27, 1933 | E.P. Sacrey | Electric motor unit construction for motor driven tools | handheld routers |
1,936,737 | Nov. 28, 1933 | E.K. Tingley | Adjustable air gap fly wheel type motor | electric motors |
2,119,986 | Jun. 07, 1938 | A.J. Dremel | Electric motor | handheld power tools |
2,136,301 | Nov. 08, 1938 | J.S. Hoddy, G.W. Hoddy | Dynamo-electric machine | |
2,141,971 | Dec. 27, 1938 | C. Desoutter | Portable electric drill and the like | handheld power drills |