Nikolai P. Bezlepkin

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Oktyabrsky, Bashkirskaya ASSR, SU

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Patents Grantslast 30 patents

Information Patent Grant
Downhole sectional screw motor, mounting fixture thereof and method...
- Patent number 4,711,006
- Issue date Dec 8, 1987
- Vsesojuzny Nauchnoissledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Valve means
- Patent number 4,470,464
- Issue date Sep 11, 1984
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING