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发明名称
DEVICE FOR THERMAL DRILLING OF HOLES
摘要
申请公布号
SU597833(A1)
申请公布日期
1978.03.15
申请号
SU19762412183
申请日期
1976.10.14
申请人
KAZAKHSKIJ POLT I IM.V.I.LENINA
发明人
YASTREBOV EVGENIJ K,SU;STYRON BORIS K,SU;TANEEV NIKOLAJ V,SU
分类号
E21B7/14;(IPC1-7):E21C21/00
主分类号
E21B7/14
代理机构
代理人
主权项
地址
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