Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5134351 | Speed changing device for a multi-polar, constant flux electric motor, and a motorized ventilating fan unit equipped with such a device | — | 1992-07-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5134351 | Speed changing device for a multi-polar, constant flux electric motor, and a motorized ventilating fan unit equipped with such a device | — | 1992-07-28 |