Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4418769 | Hammer starting mechanism | Robert R. Vincent | 1983-12-06 |
| 4243110 | Pneumatic percussion drill with exhaust cooling and lubrication of chuck end | Robert R. Vincent | 1981-01-06 |