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发明名称
DRILLING RIG CHUCK
摘要
申请公布号
SU949172(A1)
申请公布日期
1982.08.07
申请号
SU19803211428
申请日期
1980.12.04
申请人
KUZBASSKIJ POLT INSTITUT
发明人
SAFOKHIN MIKHAIL S,SU;BOGOMOLOV IGOR D,SU;SKORNYAKOV NIKOLAJ M,SU;NACHEV KONSTANTIN V,SU;MAMETEV LEONID E,SU;SHCHERBAKOV YURIJ S,SU
分类号
E21B17/03;E21B3/02;(IPC1-7):E21C9/00
主分类号
E21B17/03
代理机构
代理人
主权项
地址
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