Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896893 | Pipe having ridge on spigot and method of forming the ridge | Toshio Toshima, Takahiro Ishihara | 1999-04-27 |
AN
Atsuichi Namariyama
Overall (All Time): #3,647,849 of 4,157,543Top 90%
1
Patents All Time