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摘要
申请公布号
SU911009(A1)
申请公布日期
1982.03.07
申请号
SU19802967651
申请日期
1980.08.01
申请人
ZHUKOV BORIS A,SU;SILVESTROV VASILIJ R,SU
发明人
ZHUKOV BORIS A,SU;SILVESTROV VASILIJ R,SU
分类号
E21B23/06;(IPC1-7):E21B23/06
主分类号
E21B23/06
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