Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4406979 | Fail-safe system for pulse-controlled three-terminal d.c. motor | — | 1983-09-27 |
| 4385266 | Field weakening system for pulse-controlled three-terminal d.c. motor | — | 1983-05-24 |
| 4384240 | Regenerative braking system for three-terminal d.c. motor | — | 1983-05-17 |
| 4214290 | Control circuit for electromagnetically operated contactor | — | 1980-07-22 |