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发明名称
TRANSDUCERS
摘要
申请公布号
GB1605040(A)
申请公布日期
1981.12.16
申请号
GB19770044029
申请日期
1978.05.16
申请人
PLESSEY CO LTD
发明人
分类号
H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R17/00
代理机构
代理人
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