Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844052 | Apparatus for transmitting liquid and gas in an endoscope | Keiichi Iwakoshi, Hiroyuki Umeda, Toshinori Nishizawa | 1989-07-04 |
| 4836187 | Constant pressure apparatus of an endoscope | Keiichi Iwakoshi, Hiroyuki Umeda, Toshinori Nishizawa | 1989-06-06 |
| 4795605 | Nuclear fusion apparatus | Tokio Fukunaga, Fukutaro Kishimoto, Kazuyoshi Yabuuchi, Haruhiko Tomita, Kazuo Maeno | 1989-01-03 |