Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7975641 | Tennis scoring system | Ida Pittnerova | 2011-07-12 |
| 7335120 | String tension identification device and method | — | 2008-02-26 |
| 5489122 | Personal tennis score keeper | — | 1996-02-06 |