VR

Veniamin S. Rotenfeld

📍 Ruse, BG: #91 of 655 inventorsTop 15%
Overall (All Time): #2,367,011 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
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