Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845819 | Method for coupling two plastic constructive parts used in valve, joint and pipe devices | Junsuke Kyomen, Masayuki Sakaguchi, Hideki Kajiwara, Keiji Matsumoto, Kenzo Nishitani +2 more | 1989-07-11 |