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发明名称
DOPPELKNOPF.
摘要
申请公布号
DE1643122(U)
申请公布日期
1952.09.04
申请号
DE195200F3981U
申请日期
1952.07.04
申请人
NORBERT FROHNE
发明人
NORBERT FROHNE
分类号
主分类号
代理机构
代理人
主权项
地址
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