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发明名称
Schaltungsanordnung zur Vermeidung akustischer Rueckkopplung fuer Ausrufanlagen in Fahrzeugen
摘要
申请公布号
DE734780(C)
申请公布日期
1943.04.24
申请号
DE1940L101220D
申请日期
1940.07.06
申请人
ALLGEMEINE ELEKTRICITAETS-GESELLSCHAFT
发明人
LIPINSKI WILHELM
分类号
H04M9/08
主分类号
H04M9/08
代理机构
代理人
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