AK

Alexandr S. Kovalev

Overall (All Time): #3,880,753 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5031707 Apparatus for making holes in soil Nikolai P. Gerasimenko, Leonid M. Bobylev, Valentin K. Svirschevsky, Nikolai J. Klimov, Yakov A. Gokhman 1991-07-16