Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4672251 | Pole changeable, three phase windings | — | 1987-06-09 |
| 4338534 | Pole-amplitude modulation, pole-changing electric motors and generators | Gordon Hindle Rawcliffe, by Caroline S. Rawcliffe, executrix | 1982-07-06 |