Jury V. Vadetsky

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Moscow, SU

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Patents Grantslast 30 patents

Information Patent Grant
Screw machine having a plurality of symmetrically arranged rotors
- Patent number 4,764,094
- Issue date Aug 16, 1988
- Vsesojuzny Nauchno-Issledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
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
Multistage helical down-hole machine with frictional coupling of wo...
- Patent number 4,585,401
- Issue date Apr 29, 1986
- Veesojuzny Ordena Trudovogo Krasnogo Znameni Naucho-Issle
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bottom-hole multistart screw motor
- Patent number 4,567,953
- Issue date Feb 4, 1986
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reduction unit of drilling motor
- Patent number 4,222,445
- Issue date Sep 16, 1980
- Jury V. Vadetsky
- E21 - EARTH DRILLING MINING