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发明名称
Doppelt gekroepfter Pfaendungshaken
摘要
申请公布号
DE510194(C)
申请公布日期
1930.10.16
申请号
DENDATR079613D
申请日期
申请人
JOHANN REIMANN
发明人
分类号
E21D17/022;E21D17/03
主分类号
E21D17/022
代理机构
代理人
主权项
地址
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