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发明名称
SPOSOB WYPRZEDZAJACEGO KOTWIENIA OCIOSOW WEGLOWYCH W SCIANACH ZMECHANIZOWANYCH O SLABYCH STROPACH
摘要
申请公布号
PL98399(B1)
申请公布日期
1978.04.29
申请号
PL19760188267
申请日期
1976.03.25
申请人
发明人
分类号
E21D20/00;(IPC1-7):E21D20/00
主分类号
E21D20/00
代理机构
代理人
主权项
地址
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