Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8403730 | Stopper device for grinding stone cover of grinder | Fumitoshi Numata | 2013-03-26 |
| 8198560 | Switch devices for power tools | Fumitoshi Numata, Junichi Nishikimi, Akira Tomonaga, Tatsuya Yoshizaki | 2012-06-12 |
| 7252156 | Vibration isolation handle | Yoshio Sugiyama, Sadaharu Oki, Kenichi Kawai, Shinsuke Okuda | 2007-08-07 |
| 6259047 | Power tools with improved switch devices | Shin Sugiura | 2001-07-10 |
| D328841 | Portable electric grinder | Fusao Fushiya | 1992-08-25 |
| D305399 | Electric disc grinder | Fusao Fushiya | 1990-01-09 |