Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839495 | Laser beam welding apparatus for an inner circumferential surface of a tube | Takuya Kitera, Shoichi Urushibata, Masatoshi Sato, Tadashi Nagashima, Isao Shirasu +6 more | 1989-06-13 |