Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878791 | Expanding plastic fastener | Kazumasa Kurihara, Seiji Takahashi | 1989-11-07 |
| 4832549 | Rotary welding member made of resin | Teruji Shibayama | 1989-05-23 |
| 4824304 | Rotary welding member made of resin | Teruji Shibayama | 1989-04-25 |
| 4821381 | Fastener made of synthetic resin | Kunihiro Fukuhara, Koji Watanabe | 1989-04-18 |