Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859119 | Liquid chemical grouting apparatus and valve switching arrangement in conduit system for supplying liquid chemicals to the apparatus | Shouhei Chida, Naoki Yamaoto, Yasuo Miyazaki | 1989-08-22 |
| 4827795 | Connecting rod for internal combustion engine and method of manufacture | Isao Machida, Yoshiji Yamada | 1989-05-09 |