Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4516978 | Colored character printed on key button | Hideo Goto, Takeo Hosoe, Toshinori Oda | 1985-05-14 |
SO
Sosuke Ohtsuka
Overall (All Time): #4,014,962 of 4,157,543Top 100%
1
Patents All Time