Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331280 | Method of jointing pipes by friction welding | Kenichi Waragai, Atsuya Kamada, Masaru Kobayashi, Izumi Ochiai, Yoiti Wakabayashi | 1982-05-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331280 | Method of jointing pipes by friction welding | Kenichi Waragai, Atsuya Kamada, Masaru Kobayashi, Izumi Ochiai, Yoiti Wakabayashi | 1982-05-25 |