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发明名称
ELECTROACOUSTICAL APPARATUS
摘要
申请公布号
CA681814(A)
申请公布日期
1964.03.10
申请号
CAD681814
申请日期
申请人
ELECTRO-VOICE
发明人
WAYNE A. BEAVERSON;ROBERT C. RAMSEY
分类号
主分类号
代理机构
代理人
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