Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858572 | Device for adjusting an angular phase difference between two elements | Eiji Shirai, Yoshio Okabe | 1989-08-22 |
| 4798563 | Self-contained type automatic belt tensioner | Yoshio Okabe, Makoto Ishikawa, Tamotsu Kamiya, Tomiaki Atsumi | 1989-01-17 |