Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871242 | Soft-focus optical element | Toshio Sousa, Hiroshi Wakabayashi, Hachiro Kanai, Hidenori Miyamoto | 1989-10-03 |
| 4836665 | Objective lens | — | 1989-06-06 |
| 4832470 | Inverted galilean telescope type viewfinder system capable of changing over the magnification | — | 1989-05-23 |