Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6062543 | Hand operated chain block having an improved load chain device | Takasi Uesugi | 2000-05-16 |
| 6032928 | Hand operated chain block having improved hand wheel | Yosiaki Okamoto, Takasi Uesugi | 2000-03-07 |
| 6007054 | Hand operated chain block having an improved cover | Yosiaki Okamoto | 1999-12-28 |
| 5971364 | Hoist and traction apparatus | Yosio Ueno | 1999-10-26 |