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发明名称
APPARATUS FOR EXPANDING HOLES IN SOIL
摘要
申请公布号
SU685765(A1)
申请公布日期
1979.09.15
申请号
SU19782567090
申请日期
1978.01.10
申请人
V PROEKTNO-IZYSKATELSKIJ NII "GIDROPROEKT" IM. S.YA.ZHUKA
发明人
ALEKSEEV DMITRIJ A,SU;BRZHOZOVSKIJ BORIS A,SU;STRAKHAL VLADIMIR A,SU;AKSENOVA FAINA ,SU
分类号
E21B7/28;(IPC1-7):E02D17/14
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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