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发明名称
Schaltungsanordnung zur Zaehlung von Verbindungen waehrend des Gespraechs in Fernsprechanlagen
摘要
申请公布号
DE820161(C)
申请公布日期
1951.11.08
申请号
DE1949P046594
申请日期
1949.06.22
申请人
SIEMENS & HALSKE A. G.
发明人
BRANDSTETTER ALOIS DIPL.-ING.
分类号
H04M15/10
主分类号
H04M15/10
代理机构
代理人
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