Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818083 | Vari-focal lens system | — | 1989-04-04 |
| 4810071 | Variable focal length lens system | Hirofumi Tsuchida | 1989-03-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818083 | Vari-focal lens system | — | 1989-04-04 |
| 4810071 | Variable focal length lens system | Hirofumi Tsuchida | 1989-03-07 |