Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869504 | Football and lacing for footballs | — | 1989-09-26 |
| 4660831 | Inflatable padded game ball | — | 1987-04-28 |
| 4423524 | Suspension system for headgear | Hal D. Mitchell | 1984-01-03 |
| 4407021 | Suspension system for headgear | Hal D. Mitchell | 1983-10-04 |