Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4762263 | Small-sized gas pressure welding machine for rails with two separate mechanisms for punching-shearing excess metal | Hirotsugu Oishibashi, Muneyuki Ohara, Hisashi Yoshida, Kunio Kitagawa, Kimio Shimizu | 1988-08-09 |
| 4576324 | Gas pressure welding machine | Tadashi Takimoto, Hirotsugu Oishibashi, Katsuyoshi Ueyama, Muneyuki Ohara, Akio Kobayashi +2 more | 1986-03-18 |