SR

Semen I. Rivkin

📍 Las Piñas, PH: #239 of 867 inventorsTop 30%
Overall (All Time): #4,029,246 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4430441 Cold setting sand for foundry moulds and cores Sergei Semenovich Zhukovsky, July M. Junovich, Viktor N. Pertsovsky, Vyacheslav S. Kolesnikov, Igor P. Renzhin 1984-02-07