Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856881 | Photographic lens of long back focal length | — | 1989-08-15 |
| 4855814 | Video camera body and detachable lens each containing a memory for storing signals indicative of spectral characteristics | Masatake Kato, Kenichi Kawamoto | 1989-08-08 |
| 4838666 | Wide angle zoom lens of long back focal distance | — | 1989-06-13 |
| 4833498 | Camera | Masatake Kato, Kenichi Kawamoto | 1989-05-23 |