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发明名称
Schaltungsanordnung fuer Fernmeldeanlagen, insbesondere Fernsprechnebenstellenanlagen zur UEbertragung unterschiedlicher Kennzeichen ueber eine zweiadrige Leitung
摘要
申请公布号
DE1007820(B)
申请公布日期
1957.05.09
申请号
DE1956ST10934
申请日期
1956.03.06
申请人
STANDARD ELEKTRIK AKTIENGESELLSCHAFT
发明人
HEYDUCK ALFRED
分类号
H04M3/58
主分类号
H04M3/58
代理机构
代理人
主权项
地址
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