Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D696565 | Oil filter wrench pliers | — | 2013-12-31 |
| 4951757 | Hydraulic striking device with impact frequency control | Takatoshi Hamada | 1990-08-28 |
| 4817737 | Hydraulic striking device with impact frequency control | Takatoshi Hamada | 1989-04-04 |