Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037208 | Immersible transducer assembly | John E. Willey | 1991-08-06 |
| 4979994 | Method and apparatus for cleaning by ultrasonic wave energy | Robert L. Polhamus, John E. Willey | 1990-12-25 |
| D266794 | Ultrasonic cleaner | William L. Puskas | 1982-11-02 |