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发明名称
DEVICE FOR SEALING WELLS AND BLAST HOLES
摘要
申请公布号
SU1305394(A1)
申请公布日期
1987.04.23
申请号
SU19853868725
申请日期
1985.03.19
申请人
VNII ORG MEKH SHAKHT
发明人
LABUNSKIJ VLADIMIR F,SU;SOBOLEVA LYUDMILA V,SU
分类号
E21F7/00;E21B33/03
主分类号
E21F7/00
代理机构
代理人
主权项
地址
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