Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884621 | Hydraulic control method for implements | Keisuke Ban, Masakazu Sato, Kousuke Kikuchi | 1989-12-05 |
| 4846252 | Secondary pressurization casting method | Masakazu Sato, Keisuke Ban, Michio Konishi | 1989-07-11 |