Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829925 | Coolant actuated rear-end countersinking tool | — | 1998-11-03 |
| 5016878 | Game having magnetically operable pieces | Eric Hay | 1991-05-21 |
| 4834371 | Game having magnetically operable pieces | Eric Hay | 1989-05-30 |
| 4417728 | Training apparatus for racket sports | Eric Hay | 1983-11-29 |
| 4307882 | Ball game for indoor use | Eric Hay | 1981-12-29 |