Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D419424 | Wheel lock for vehicles, airplanes, and the like | — | 2000-01-25 |
| 5262972 | Multichannel digital filter apparatus and method | Don C. Dunkerley | 1993-11-16 |
| 4867417 | Power lift-assist apparatus | Robert L. Williamson | 1989-09-19 |
| 4576021 | Trailer lock | — | 1986-03-18 |