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发明名称
TRANSDUTORES PIEZOELETRICOS E MICROFONE
摘要
申请公布号
BR7505233(A)
申请公布日期
1977.03.08
申请号
BR19750005233
申请日期
1975.08.15
申请人
PLESSEY HANDEL U INVESTMENTS AG
发明人
SEAR J;GARNER G
分类号
H01L41/00;H04R17/00;(IPC1-7):H01L41/00
主分类号
H01L41/00
代理机构
代理人
主权项
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