Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D423899 | Inner socket | Sueharu Yasutomi, Shozo Matsumura, Koichi Nakayama | 2000-05-02 |
| 6053080 | Device for tightening bolt and/or nut | Yasunobu Kaneyama, Shinji Fukuhara, Shozo Matsumura, Kenji Sato, Yoshiyuki Umemoto | 2000-04-25 |
| D419845 | Inner socket | Sueharu Yasutomi, Shozo Matsumura, Koichi Nakayama | 2000-02-01 |
| 5964128 | Bolt tightening device | Yasunobu Kaneyama, Shozo Matsumura, Kenji Sato | 1999-10-12 |