Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4183561 | Separation-prevented pipe joint which can be assembled from inside pipe | Hiroshi Miyamoto, Tadao Yamaji, Toshi Nakajima | 1980-01-15 |
TS
Takao Sagara
Overall (All Time): #4,104,285 of 4,157,543Top 100%
1
Patents All Time