APPARATUS FOR DRILLING LARGE-DIAMETER WELLS
BELKIND MIKHAIL B,SU, KALASHNIKOV GENNADIJ I,SU, BAGINSKIJ ROMUALD A,SU
Year of Publication 30.01.1985
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Year of Publication 30.01.1985
Patent
APPARATUS FOR DRILLING LARGE-DIAMETER WELLS
BELKIND MIKHAIL B,SU, SUVEROV VALERIJ P,SU, KALASHNIKOV GENNADIJ I,SU, GOLOVACHEV ANDREJ S,SU, TSVETKOV VIKTOR I,SU
Year of Publication 07.07.1982
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Year of Publication 07.07.1982
Patent