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发明名称
Anorndung fuer Fernsprechapparate mit einer der Hoerkapsel vorschaltbaren und in demHandapparat angeordneten Verstaerkereinrichtung
摘要
申请公布号
DE971783(C)
申请公布日期
1959.03.26
申请号
DE1952W009122
申请日期
1952.07.25
申请人
STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT
发明人
WERNICK KLAUS DIPL.-ING.
分类号
H04M1/60
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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