Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893148 | Method for storing dry silver salt roll film for rotary type microphotography and rotary type microphotography camera system | Yoshio Hayashi, Akira OHNUMA, Shuichiro Ogawa | 1990-01-09 |