Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4412442 | Method for bending a metal pipe | Shumpei Kawanami, Yasuo Watanabe | 1983-11-01 |
| 4195506 | Method and apparatus for bending elongated materials | Shunpei Kawanami | 1980-04-01 |