Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104159 | Threadless coupling for pipes and an air-tight inner cylinder therefor | Kyukichi Sugiyama | 1992-04-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104159 | Threadless coupling for pipes and an air-tight inner cylinder therefor | Kyukichi Sugiyama | 1992-04-14 |