Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647401 | Reinforcing-thread-buried resin pipe | — | 1997-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647401 | Reinforcing-thread-buried resin pipe | — | 1997-07-15 |