Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385267 | Controlled rotor rectifier arrangement for a slip-recovery drive | Roger B. Herbert, Alan F. Wilkinson | 1983-05-24 |
| 4385268 | Two-quadrant operation system for a slip-recovery drive | Roger B. Herbert | 1983-05-24 |