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发明名称
ARRANGEMENT FOR ASSEMBLING THE ROOF AND WALLS OF MINE WORKINGS
摘要
申请公布号
SU817247(A1)
申请公布日期
1981.03.30
申请号
SU19792762009
申请日期
1979.04.26
申请人
LE ,OP¯EHA OKTù¬PÓCKOö PEBOó½|ôô ô OP¯EHA TPÔ¯OBO×O KPACHO×O ³HAMEHô ×OPHÕö ôHCTôTÔT ôM.×.B.üóEXAHOBA
发明人
AREFEV VALERIJ P,SU
分类号
(IPC1-7):E21C17/00
主分类号
(IPC1-7):E21C17/00
代理机构
代理人
主权项
地址
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