Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831314 | Drive apparatus for opening and closing mechanism | Seiichi Sugai | 1989-05-16 |
| 4815576 | Twin-tube type shock absorber with a base valve portion structure coupled by caulking | — | 1989-03-28 |