Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4583888 | Cemented carbide drill bit | Yoshikatsu Mori, Hideo Fukagawa | 1986-04-22 |
YD
Yoshio Dohi
Overall (All Time): #3,994,256 of 4,157,543Top 100%
1
Patents All Time