| All Patents in class 310/72 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 465,512 | Dec. 22, 1891 | A.K. Warren, W.S. Andrews | Rheostat | motor controls |
| 809,394 | Jan. 09, 1906 | A. Pedersen | Electrically-operated portable drill | handheld power tools |
| 1,216,397 | Feb. 20, 1917 | B.F. Bailey, J.M. Barr, O.S. More, L.G. Long | Induction Motor | induction motors |
| 1,587,760 | Jun. 08, 1926 | E.L. Connell | Electric motor | handheld power drills |
| 2,013,821 | Sep. 10, 1935 | N.S. Yost | Electric motor | induction motors |
| 2,017,255 | Oct. 15, 1935 | C.F. Norton | Electric motor | capacitor start induction motors |
| 2,213,191 | Sep. 03, 1940 | H.L. Johnston | Food handling apparatus | |
| 2,446,761 | Aug. 10, 1948 | K.A. Harmon | Combined magneto and alternator | ignition systems |
