Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D299672 | Tennis racquet | — | 1989-01-31 |
| D299042 | Tennis racquet frame | — | 1988-12-20 |
| 4546977 | Racquet stringing machine with improved racquet retaining standard | Fred E. Martin | 1985-10-15 |
| 4366958 | Racket stringing machines | — | 1983-01-04 |