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发明名称
Schaltungsanordnung fuer Fernsprechnebenstellenanlagen
摘要
申请公布号
DE724248(C)
申请公布日期
1942.08.22
申请号
DE1939S136516D
申请日期
1939.03.29
申请人
SIEMENS & HALSKE AG.
发明人
PFAFF DIPL.-ING. WALTER
分类号
H04Q3/62
主分类号
H04Q3/62
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代理人
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