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发明名称
METHOD OF PROTECTING UNDERMINED STRUCTURES
摘要
申请公布号
SU1627701(A1)
申请公布日期
1991.02.15
申请号
SU19884484589
申请日期
1988.07.01
申请人
PERMSKIJ POLT I;LENINOGORSKIJ POLIMETALLICHESKIJ KOMBINAT
发明人
KASHNIKOV YURIJ A,SU;KUTOVOJ SERGEJ N,SU;YAKUSHINA ELENA M,SU;TSAREV SERGEJ S,SU
分类号
E21C41/16
主分类号
E21C41/16
代理机构
代理人
主权项
地址
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