| All Patents in class 310/40R |
Patents 16 -
30
of 32
      |
| Number | Date | Patentee | Title | Type |
| 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 |
| 2,170,036 | Aug. 22, 1939 | R. Schumann | Small electric machine tool | handheld power tools |
