Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808786 | Wire electrode type electric discharge machining device with preventable application of external force to its lower arm | Masaru Shinkai, Makoto Tanaka, Masaaki Onizuka | 1989-02-28 |