Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5165470 | Plugging apparatus for heat exchanger | Akira Maekawa, Akira Shinomiya | 1992-11-24 |
| 4839495 | Laser beam welding apparatus for an inner circumferential surface of a tube | Takuya Kitera, Shoichi Urushibata, Masatoshi Sato, Tadashi Nagashima, Shoichi Hamada +6 more | 1989-06-13 |