Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313045 | MIG Arc welding method | Noboru Nishiyama | 1982-01-26 |
| 4309587 | Horizontal electro-slag welding process for surfacing | Shosaburo Nakano, Toshiharu Hiro, Noboru Nishiyama, Masaaki Kosho | 1982-01-05 |