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发明名称
ELECTRO-ACOUSTIC TRANSDUCER UNIT
摘要
申请公布号
GB1501468(A)
申请公布日期
1978.02.15
申请号
GB19750014528
申请日期
1975.04.09
申请人
PEIKER H
发明人
分类号
H04R1/22;(IPC1-7):H04R1/00
主分类号
H04R1/22
代理机构
代理人
主权项
地址
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