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发明名称
Improvements in or relating to piezo-electric devices
摘要
申请公布号
GB359567(A)
申请公布日期
1931.10.26
申请号
GB19300022602
申请日期
1930.07.26
申请人
LEONARD ANGELO LEVY;DONALD WILLOUGHBY WEST;JAMES ROBINSON
发明人
分类号
H03H9/09
主分类号
H03H9/09
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