Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4262255 | Level indicating device | Mineo Ohshima, Koichi Sakai | 1981-04-14 |
AK
Akira Kokei
Overall (All Time): #4,087,753 of 4,157,543Top 100%
1
Patents All Time