Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834223 | Valve structure for telescopic hydraulic damper | Sadao Kawamura, Kanau Iwashita, Tomeo Fuse, Shuichi Kawahara, Naoyuki Sataka | 1989-05-30 |
| 4819773 | Valve structure for hydraulic damper | Heihati Kondo | 1989-04-11 |