Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839495 | Laser beam welding apparatus for an inner circumferential surface of a tube | Shoichi Urushibata, Masatoshi Sato, Tadashi Nagashima, Shoichi Hamada, Isao Shirasu +6 more | 1989-06-13 |
| 4646768 | Extendable and retractable cleaning apparatus | Yukio Tanaka, Toshiya Miyatake, Isamu Miyamae | 1987-03-03 |