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发明名称
HAARSPANGE MIT EINGEBAUTEM ELEKTROAKUSTISCHEM SCHWERHOERIGENGERAET.
摘要
申请公布号
DE1754455(U)
申请公布日期
1957.10.24
申请号
DE195700T8244U
申请日期
1957.05.22
申请人
TOEPHOLM & WESTERMANN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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