Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858312 | Torque control for automatic connector assembly tool | — | 1989-08-22 |
| 4807887 | Missed hit and player proximity detection system for electronic projectile game | Donald P. DeVale, Douglas W. Adams | 1989-02-28 |