Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633383 | Method of supervising operating states of digging machines | Eisaku Yamada | 1986-12-30 |
| 4599983 | Method and apparatus for injecting fuel for a diesel engine | — | 1986-07-15 |