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发明名称
ELECTROACOUSTIC TRANSDUCER USED IN A MICROPHONE
摘要
申请公布号
GB9107950(D0)
申请公布日期
1991.05.29
申请号
GB19910007950
申请日期
1991.04.15
申请人
CHANG, CHING-LU
发明人
分类号
H04R1/22
主分类号
H04R1/22
代理机构
代理人
主权项
地址
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