Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4555615 | Carbon rod assembly for arc gouging and blasting of metallic article | Haruo Yasuda, Kunihiko Yoshida, Takayuki Mizutani | 1985-11-26 |
| 4492850 | Carbon rod assembly for arc gouging and blasting of metallic article | Haruo Yasuda, Kunihiko Yoshida, Takayuki Mizutani | 1985-01-08 |