Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673602 | Method and apparatus for making perforations continuously | Koichi Takahashi, Mituru Suzuki, Hiroshi Tsuzaki | 1997-10-07 |
| 5671452 | Photo film and method of inspecting the same | — | 1997-09-23 |