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发明名称
Improvements in or relating to piezo-electric transducers
摘要
申请公布号
GB654421(A)
申请公布日期
1951.06.20
申请号
GB19480006704
申请日期
1948.03.03
申请人
THE BRUSH DEVELOPMENT COMPANY
发明人
分类号
H01L41/04;H01L41/09;H04R17/00
主分类号
H01L41/04
代理机构
代理人
主权项
地址
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