Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6418593 | Strap and attaching structure thereof | Shinichiro Tsurumaru, Shuji Sasaki | 2002-07-16 |
| 6302454 | Battery lock mechanism for portable device | Shinichiro Tsurumaru | 2001-10-16 |
| 6189938 | Locking structure for covering element | Mitsuaki Kumagai, Takao Obata, Toshiyuki Kobayashi | 2001-02-20 |
| 6051334 | Battery lock mechanism for portable device | Shinichiro Tsurumaru | 2000-04-18 |