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发明名称
PREFABRYKOWANA TRAPEZOWA RYNNA SCIEKOWA
摘要
申请公布号
PL198102(A1)
申请公布日期
1978.12.18
申请号
PL19770198102
申请日期
1977.05.13
申请人
KOPALNIA WEGLA KAMIENNEGO KOMU
发明人
TREBACZ WIKTOR;RULKA KAZIMIERZ;WYPCHOL NORBERT
分类号
E21F;(IPC1-7):E21F/
主分类号
E21F
代理机构
代理人
主权项
地址
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