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发明名称
摘要
申请公布号
PL215554(A2)
申请公布日期
1980.04.21
申请号
PL19790215554
申请日期
1979.05.14
申请人
KOPALNIA WEGLA KAMIENNEGO POKO
发明人
ZIELINSKI ANTONI;NIMPSCH ANTONI;SZEWCZYK MARIAN
分类号
E21F;(IPC1-7):E21F/
主分类号
E21F
代理机构
代理人
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