Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701691 | Region limiting excavation control system for construction machine | Hiroshi Watanabe, Masakazu Haga, Eiji Yamagata, Kazuo Fujishima, Hiroyuki Adachi | 1997-12-30 |
| 5673558 | Hydraulic circuit system for hydraulic excavator | Genroku Sugiyama, Koji Ishikawa, Tsukasa Toyooka, Tsuyoshi Nakamura | 1997-10-07 |
| 5632190 | Burglarproof device for hydraulic machine | Kazuhiro Sunamura, Osamu Tomikawa, Shigehiro Yoshinaga | 1997-05-27 |