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发明名称
Schaltungsanordnung für Fernsprechanlagen mit mehreren in Reihe liegenden Vermittlungsstellen.
摘要
申请公布号
AT132901(B)
申请公布日期
1933.04.25
申请号
ATD132901
申请日期
1931.08.22
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H04M7/06
主分类号
H04M7/06
代理机构
代理人
主权项
地址
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