Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834375 | Start system batting unit and method | Rick A. Elstein, Larry E. Mayol | 1989-05-30 |
| 4702475 | Sports technique and reaction training system | Rick A. Elstein, John Gazzo | 1987-10-27 |