Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836296 | Fluid pressure impulse nut runner | — | 1989-06-06 |
| 4813492 | Low pressure shut off device contained within a pneumatic tool | — | 1989-03-21 |
| 4813822 | Power drill system with adjustable depth sensing means | — | 1989-03-21 |
| 4799833 | Clutch for positive feed drill | Robert A. Pennison | 1989-01-24 |