SN

Sergei Ivanovich Nefedov

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #3,198,431 of 4,157,543Top 80%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8128389 Positive-displacement machine design (variants) Aleksandr Ivanovich Zhirkin, Sergei Lvovich Solomonov, Yury Lazarevich Arzumanyan 2012-03-06