VS

Valery I. Semenets

Overall (1989): #46,831 of 140,708Top 35%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4823889 Downhole screw motor Dmitry F. Baldenko, Leonid A. Kondratenko 1989-04-25