Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336436 | Method for welding girth joints in pipe lines | Vasily Y. Dubovetsky, Leonid N. Kopylov, Valentin A. Kotov, Jury I. Saprykin, Vladimir I. Slepchenko +12 more | 1982-06-22 |
| 4231694 | Apparatus for removing a welding bulge from pipes | Mikhail R. Unigovsky, Evgeny V. Rulevsky, Fedor I. Sapa, Alexei T. Parkhomchuk, Arnold S. Yampolsky +4 more | 1980-11-04 |