| All Patents in class 318/154 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 520,748 | May 29, 1894 | J.S. Bancroft | Method of Operating Electric Motors | motor controls |
| 865,813 | Sep. 10, 1907 | W.H. Powell | Methods and means for controlling electric motors | motor controls |
| 865,814 | Sep. 10, 1907 | W.H. Powell | Motor-control system | motor controls |
| 865,816 | Sep. 10, 1907 | W.H. Powell | Motor-control system | motor controls |
| 865,820 | Sep. 10, 1907 | W.J. Richards | Motor-control system | motor controls |
| 865,821 | Sep. 10, 1907 | W.J. Richards | System of motor control | motor controls |
| 867,154 | Sep. 24, 1907 | W.J. Richards | System of motor control | motor controls |
| 2,587,312 | Feb. 26, 1952 | C.E. Greene | Turret lathe | turret lathes |
