Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6280355 | Racket stringing clamp | Madeline Hauptman | 2001-08-28 |
| 6089997 | Method and apparatus for stringing game racket and the racket so strung | Madeline Hauptman | 2000-07-18 |