Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5003149 | Apparatus for overhead submerged-arc welding | Pavel A. Varenchuk, Valentin D. Kovalev, Mikhail Ivanenko, Anatoly Vasilievich Zarechensky, Nikolai P. Shpak +1 more | 1991-03-26 |