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发明名称
Schwingungsgebilde fuer elektroakustische Wandler
摘要
申请公布号
DE726769(C)
申请公布日期
1942.10.20
申请号
DE1937E049982D
申请日期
1937.07.23
申请人
ELECTROACUSTIC G.M.B.H.
发明人
HECHT DR. HEINRICH
分类号
B06B1/08
主分类号
B06B1/08
代理机构
代理人
主权项
地址
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