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经营范围
发明名称
ELEKTROAKUSTISCHER WANDLER
摘要
申请公布号
DE2400625(A1)
申请公布日期
1974.07.11
申请号
DE19742400625
申请日期
1974.01.08
申请人
HEIL, OSKAR, BELMONT, CALIF. (V.ST.A.)
发明人
HEIL, OSKAR, BELMONT, CALIF. (V.ST.A.)
分类号
H04R9/00;H04R9/04;H04R9/06;(IPC1-7):H04R9/06
主分类号
H04R9/00
代理机构
代理人
主权项
地址
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