Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5492001 | Method and apparatus for working burred portion of workpiece | Zirou Sasaki, Masuhiro Yamamoto | 1996-02-20 |
| 4278147 | Muffler for engine, particularly motorcycle engine | Junichi Watanabe, Takahiko Aoyama | 1981-07-14 |