Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885605 | Negative/positive microfilm discriminating system | Masafumi Fujita, Takao Saijo | 1989-12-05 |
| 4835577 | Negative/positive microfilm discriminating system | Masafumi Fujita, Takao Saijo | 1989-05-30 |