Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811502 | Racquet with elongated peripheral main string segments and enlarged sweet spot | Richard Janes, Po-Jen Cheng, William D. Severa | 2004-11-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6811502 | Racquet with elongated peripheral main string segments and enlarged sweet spot | Richard Janes, Po-Jen Cheng, William D. Severa | 2004-11-02 |