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发明名称
AUTOMATIC ELEVATOR FOR RUNNING DRILL PIPES
摘要
申请公布号
SU802510(A2)
申请公布日期
1981.02.07
申请号
SU19792828921
申请日期
1979.10.09
申请人
VNI PK I NEFTYANOGO MASH VNIINEFTEMASH
发明人
RAJGORODSKIJ RAFAIL P,SU;CHERNIKOV MIKHAIL S,SU;ALEKSEEV LUVI G,SU;GRAMOLIN VADIM N,SU
分类号
E21B19/06;(IPC1-7):E21B19/06
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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