Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832820 | Core bar of elastic body track shoe | Hiroaki Watanabe, Kazutoshi Hori | 2004-12-21 |
| 6709077 | Core bar of elastic body track shoe | Hiroaki Watanabe, Kazutoshi Hori | 2004-03-23 |
| 6471307 | Crawler belt type traveling system | Hiroaki Watanabe | 2002-10-29 |