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发明名称
Schaltungsanordnung zur Zaehlung abgehender Amtsgespraeche in Fernsprechnebenstellenanlagen
摘要
申请公布号
DE1002041(B)
申请公布日期
1957.02.07
申请号
DE1955S046813
申请日期
1955.12.22
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
KRAUST RUDOLF;BAEHR DIPL.-ING. ERNST
分类号
H04M15/28
主分类号
H04M15/28
代理机构
代理人
主权项
地址
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