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发明名称
LEVEL BARRIER
摘要
申请公布号
SU752047(A1)
申请公布日期
1980.07.30
申请号
SU19782678091
申请日期
1978.10.24
申请人
PROIZV OB "DONETSKUGOL"
发明人
SHEVTSOV VLADIMIR ,SU;KUZMICH YURIJ ,SU
分类号
E21F13/02;(IPC1-7):E21F13/02
主分类号
E21F13/02
代理机构
代理人
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地址
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