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经营范围
发明名称
CAPACITIVE TRANSDUCERS
摘要
申请公布号
GB1313551(A)
申请公布日期
1973.04.11
申请号
GB19700037450
申请日期
1970.08.04
申请人
MARCONI CO LTD
发明人
分类号
H04R19/00;(IPC1-7):H04R19/00
主分类号
H04R19/00
代理机构
代理人
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地址
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