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发明名称
WASSERDICHTER TELEFONHOERER.
摘要
申请公布号
DE1693049(U)
申请公布日期
1955.02.10
申请号
DE195400F8659U
申请日期
1954.12.06
申请人
FUNKE & HUSTER ELEKTRIZITAETSGESELLSCHAFT M.B.H.
发明人
分类号
主分类号
代理机构
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