Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885605 | Negative/positive microfilm discriminating system | Yasushi Yamade, Takao Saijo | 1989-12-05 |
| 4835577 | Negative/positive microfilm discriminating system | Yasushi Yamade, Takao Saijo | 1989-05-30 |
| 4825243 | Film image projecting apparatus for handling a roll film containing a plurality of rows of frames | Masaaki Ito, Nobuo Ueda | 1989-04-25 |
| 4803505 | Microfilm camera | Takao Saijo | 1989-02-07 |