Yury V. Vadetsky

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Moscow, SU

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Patents Grantslast 30 patents

Information Patent Grant
Hinge joint for a screw planetary hydraulic drill
- Patent number 4,556,398
- Issue date Dec 3, 1985
- Vsesojuzny Nauchnoissledovatelsky Institut Burovoi Tekhniki
- Dmitry F. Baldenko
- E21 - EARTH DRILLING MINING