Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421574 | Sports instrument and impact-absorbing element to be attached to sports instrument | Masahiro Yamagishi, Masao Hijiri, Yasuo Komatsu, Hiroshi Edagawa | 1995-06-06 |
| 5314180 | Sports instrument and impact-absorbing element to be attached to sports equipment | Masahiro Yamagishi, Masao Hijiri, Yasuo Komatsu, Hiroshi Edagawa | 1994-05-24 |