Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341938 | Method and apparatus for seam-welding steel pipes | Hiroyoshi Matsubara, Kenji Takeshige, Tatsumi Osuka, Takashi Nagamine, Osamu Hirano +2 more | 1982-07-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341938 | Method and apparatus for seam-welding steel pipes | Hiroyoshi Matsubara, Kenji Takeshige, Tatsumi Osuka, Takashi Nagamine, Osamu Hirano +2 more | 1982-07-27 |