Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499236 | Snow removing machine | Isao Yoshida, Yasunori Yamamoto, Norikazu Shimizu, Seishu Sakai | 2002-12-31 |
| 6449882 | Snow removal machine | Isao Yoshida, Hiroshi Sueshige, Norikazu Shimizu | 2002-09-17 |