Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4948271 | Bearing structure with improved lubricating seals for supporting shaft element | Masaaki Matsumoto | 1990-08-14 |
| 4919551 | Bearing with improved lubrication seals | Masaaki Matsumoto | 1990-04-24 |