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发明名称
Fernsprechkleinzentrale mit direkter Schaltung und Gluehlampensignalisierung
摘要
申请公布号
DE891282(C)
申请公布日期
1953.09.28
申请号
DE1951S023801
申请日期
1951.07.05
申请人
DR. EUGEN SASSE K.-G.
发明人
SASSE EUGEN DR.
分类号
H04M9/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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