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发明名称
Schaltungsanordnung fuer Fernsprechanlagen zur UEbermittlung von UEberwachungssignalen an eine Beamtin
摘要
申请公布号
DE636313(C)
申请公布日期
1936.10.10
申请号
DE1927S083383D
申请日期
1927.12.30
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
分类号
H04M17/02
主分类号
H04M17/02
代理机构
代理人
主权项
地址
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