Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288091 | Apparatus for coupling a tractor, a dump trailer and a dump truck | Haruhiko Umeda, Hidehiro Takeuchi, Masaru Uenoyama, Hiroyuki Ando, Hideo Hara | 1981-09-08 |
| 4220352 | Suspension for a front axle of a trailer | Haruhiko Umeda, Masaru Uenoyama, Hiroyuki Ando, Naotaka Endo | 1980-09-02 |