Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4220292 | Photography film spool | Shigemitsu Mizutani, Masao Tsuruta, Yasuo Matsumoto | 1980-09-02 |
KO
Kengo ONO
Overall (All Time): #4,118,826 of 4,157,543Top 100%
1
Patents All Time