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发明名称
TELEFONHOERER.
摘要
申请公布号
DE1637556(U)
申请公布日期
1952.04.24
申请号
DE195200S6003U
申请日期
1952.02.11
申请人
OTTO SINGLE
发明人
OTTO SINGLE
分类号
主分类号
代理机构
代理人
主权项
地址
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