PLUGGING APPARATUS
RUDENKO ALEKSEJ P,SU, NEFEDOV VADIM P,SU, ZHUKOV ALEKSANDR M,SU, ANDRIANOV IGOR N,SU
Year of Publication 15.02.1982
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Year of Publication 15.02.1982
Patent
CORE BARREL
NEROSLAVSKIJ BORIS ,SU, VARZHEL BORIS ,SU, BUKHAREV NIKOLAJ N,SU, ANDRIANOV IGOR N,SU
Year of Publication 25.05.1978
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Year of Publication 25.05.1978
Patent