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发明名称
TASTENSCHALTER FUER FERNSPRECHAPPARATE.
摘要
申请公布号
DE1647331(U)
申请公布日期
1952.11.27
申请号
DE195200D4970U
申请日期
1952.09.25
申请人
DEUTSCHE TELEPHONWERKE UND KABELINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
主分类号
代理机构
代理人
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