Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996857 | Method and an apparatus for manufacturing a metallic bellows | Kenichi Kageyama, Tsutomu Furuyama | 1991-03-05 |
| 4715202 | Coil-spring winding apparatus | Masaharu Shibata, Tsutomu Furuyama | 1987-12-29 |