Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913430 | Tennis racket strings having orthogonally directed protrusions for enhancing the grip when in contact with a tennis ball | — | 1990-04-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913430 | Tennis racket strings having orthogonally directed protrusions for enhancing the grip when in contact with a tennis ball | — | 1990-04-03 |