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发明名称
ELECTRO-ACOUSTIC TRANSDUCER
摘要
申请公布号
IE55102(B1)
申请公布日期
1990.05.23
申请号
IE19840000162
申请日期
1984.01.25
申请人
STC PLC
发明人
分类号
H04R1/22;(IPC1-7):H04R1/28
主分类号
H04R1/22
代理机构
代理人
主权项
地址
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