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发明名称
Hilfsgeraet beim Schachtabteufen
摘要
申请公布号
DE966951(C)
申请公布日期
1957.09.19
申请号
DE1955M029089
申请日期
1955.12.20
申请人
MASCHINENFABRIK NUESSE & GRAEFER K.-G.
发明人
KOLLERT DIPL.-ING. ALOIS
分类号
E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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