Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5354106 | Connector for connecting a pipe of small diameter with block expansion prevention surfaces | Katsushi Washizu | 1994-10-11 |
| 5338073 | Slender pipe connecting connector | Katsushi Washizu | 1994-08-16 |
| 5092632 | Structure for coupling resin tubes by the use of a bracket | Katsushi Washizu | 1992-03-03 |