Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935002 | Golf club shaft | Norio Matsumoto, Masaki Wakabayashi | 2011-05-03 |
| 7585231 | Golf club shaft | Norio Matsumoto, Masaki Wakabayashi | 2009-09-08 |
| 7172518 | Golf club shaft | Norio Matsumoto, Masaki Wakabayashi | 2007-02-06 |