Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885605 | Negative/positive microfilm discriminating system | Masafumi Fujita, Yasushi Yamade | 1989-12-05 |
| 4835577 | Negative/positive microfilm discriminating system | Masafumi Fujita, Yasushi Yamade | 1989-05-30 |
| 4803505 | Microfilm camera | Masafumi Fujita | 1989-02-07 |