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发明名称
Schaltungsanordnung zur Begrenzung der Verbindungsdauer in Fernmeldeanlagen, insbesondere Fernsprechanlagen
摘要
申请公布号
DE718136(C)
申请公布日期
1942.03.04
申请号
DE1940S140091D
申请日期
1940.02.10
申请人
SIEMENS & HALSKE AG.
发明人
LUBBERGER DR.-ING. FRITZ
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
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