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发明名称
APPARATUS FOR FORMING WELLS
摘要
申请公布号
SU941531(A1)
申请公布日期
1982.07.07
申请号
SU19803008963
申请日期
1980.11.27
申请人
KT BYURO S O PROIZV PRI I STROITELSTVA ARKHITEKTURY GOSSTROYA BSSR
发明人
BEZVERKHIJ VYACHESLAV M,SU;SHATILO BORIS N,SU;FEOFILOV YURIJ V,SU
分类号
E21B7/28;(IPC1-7):E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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