Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809504 | Control system for controlling input power to variable displacement hydraulic pumps of a hydraulic system | Yasuo Tanaka, Hiroshi Watanabe, Shigetaka Nakamura | 1989-03-07 |