Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350260 | Golf ball handling system | J. Richard Hollrock | 1994-09-27 |
| 5332350 | Golf ball handling system | J. Richard Hollrock | 1994-07-26 |
| 5228168 | Golf ball handling system | J. Richard Hollrock | 1993-07-20 |
| 4750691 | Retractable aircraft hoist | Alvin Kagan, Scott D. Johansen | 1988-06-14 |
| 4251187 | Blade retention bearing for helicopter rotor | — | 1981-02-17 |