Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4920836 | Two blade type impulse wrench | Yoshiaki Igarashi, Shiro Saito, Eiichi Wada, Keiji Murai | 1990-05-01 |
| 4766787 | Two-blade type impulse wrench | Yoshiaki Igarashi, Shiro Saito, Eiichi Wada, Keiji Murai | 1988-08-30 |