| All Patents in class 388/826 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 315,181 | Apr. 07, 1885 | F.J. Sprague | Electric Motor and Generator | electric motors |
| 390,820 | Oct. 09, 1888 | N. Tesla | Regulator for Alternate-Current Motors | |
| 673,239 | Apr. 30, 1901 | J. Burke | Regulation and control of electric motors | motor controls |
| 1,227,400 | May 22, 1917 | M. von Dolivo-Dobrowolsky | Electric motor | synchronous motors |
| 2,609,524 | Sep. 02, 1952 | C.E. Greene | Electric Control System | machine tool controls |
| 3,193,698 | Jul. 06, 1965 | R.M. Henderson, R. Zechlin | Transistor Controlled Speed Shunt | diesel locomotives |
