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发明名称
Knopf mit einer in einem Ausschnitt beweglich angeordneten, mit hakenfoermigen Nadeln versehenen Platte
摘要
申请公布号
DE662894(C)
申请公布日期
1938.07.23
申请号
DENDATST54371D
申请日期
申请人
EMIL STICHT
发明人
分类号
A44B1/18
主分类号
A44B1/18
代理机构
代理人
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