Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5731524 | Method and apparatus for measuring torsional rigidity of a shaft | Norio Matsumoto | 1998-03-24 |
| 5429008 | Method and apparatus for measuring figure of deflection of golf club shaft | Norio Matsumoto | 1995-07-04 |