Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358696 | Permanent magnet synchronous motor rotor | Joseph Liu, John J. Keuper | 1982-11-09 |
| 4358697 | Two-pole permanent magnet synchronous motor rotor | Joseph Liu, John J. Keuper | 1982-11-09 |