BP

Boris P. Preobrazhensky

Overall (All Time): #4,123,164 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4231860 Flotation machine Vyacheslav D. Kuznetsov, Valentin E. Rozhnov, Jury V. Stepanov, Anatoly N. Belitsky, Viktor N. Beizer +9 more 1980-11-04