Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870439 | Focal length varying device for camera | Takayuki Tsuboi, Isao Nakazawa, Yasuhiko Shiomi | 1989-09-26 |
| 4867769 | Supporting structure for ceramic tubes in a gas system | Noriyuki Oda, Katsumi Higashi | 1989-09-19 |
| 4811039 | Camera | Hideo Tamamura | 1989-03-07 |
| 4803504 | Waterproof camera | Hideo Tamamura | 1989-02-07 |