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经营范围
发明名称
Elektromechanischer Wandler
摘要
申请公布号
DE1176888(B)
申请公布日期
1964.08.27
申请号
DE1961C023715
申请日期
1961.03.23
申请人
COLUMBIA BROADCASTING SYSTEM, INC.
发明人
BAUER BENJAMIN B.
分类号
H04R17/08
主分类号
H04R17/08
代理机构
代理人
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