Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994644 | Apparatus for overhead submerged arc welding | Pavel A. Varenchuk, Valentin D. Kovalev, Vsevolod N. Bernadsky, Vladimir F. Biitsev, Pavel S. Nefedov +1 more | 1991-02-19 |