Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539177 | Method of and apparatus for overlap welding of the inner surface of an elbow pipe | Masaru Okuya, Tetsuo Yamada, Fujio Kageyama, Yuji Yutaka, Yukio Hase | 1996-07-23 |