| All Patents in class 310/90 |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 511,196 | Dec. 19, 1893 | O.F. Conklin | Electric motor | fans |
| 613,054 | Oct. 25, 1898 | R.H. Bates, D.L. Bates | Electric fan | electric motors |
| 618,131 | Jan. 24, 1899 | H.L. Parker, C.R. Meston | Bearing for armature-shafts of electric motors | motor bearings |
| 620,609 | Mar. 07, 1899 | F. Schwedtmann, E.S. Pillsbury | Motor | electric motors |
| 693,837 | Feb. 25, 1902 | W.E. Canedy | Motor-gearing | |
| 792,762 | Jun. 20, 1905 | G.S. Dunn | Dynamo Electric Machine | DC motors |
| 1,013,149 | Jan. 02, 1912 | J.D. Forrer | Electric motor | motor bearings |
| 1,046,075 | Dec. 03, 1912 | G.L. Kelley | Woodworking or routing machine | handheld routers |
| 1,122,213 | Dec. 22, 1914 | E. Mattman | Adjustable end head for dynamo-electric machines | electric motors |
| 1,185,366 | May 30, 1916 | J. Burke | Dynamo-electric machine | motor stators |
| 1,224,260 | May 01, 1917 | C.O. Bergstrom | Oil-deflector | electric motors |
| 1,241,659 | Oct. 02, 1917 | E. Ritz, Jr. | Electric portable grinder | handheld grinders |
| 1,259,132 | Mar. 12, 1918 | E. Ritz, Jr. | Portable electric tool | handheld grinders |
| 1,327,160 | Jan. 06, 1920 | J. Hurtig | Electrically-driven spindle | electric motors |
| 1,858,404 | May 17, 1932 | T.G. Louis | Magneto | ignition systems |
