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发明名称
METHOD FOR PROTECTING PREPARATION WORKINGS
摘要
申请公布号
SU949178(A1)
申请公布日期
1982.08.07
申请号
SU19803210274
申请日期
1980.12.01
申请人
DN G PI "DNEPROGIPROSHAKHT"
发明人
LUPININ YURIJ V,SU;STYTSIN VIKTOR I,SU;POZDNYAKOV MIKHAIL A,SU
分类号
(IPC1-7):E21C41/04
主分类号
(IPC1-7):E21C41/04
代理机构
代理人
主权项
地址
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