Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5008581 | Piezoelectric revolving resonator and single-phase ultrasonic motor | Akio Kumada, Minoru Okada | 1991-04-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5008581 | Piezoelectric revolving resonator and single-phase ultrasonic motor | Akio Kumada, Minoru Okada | 1991-04-16 |