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发明名称
Improvements in systems comprising piezo-electric crystals
摘要
申请公布号
GB462109(A)
申请公布日期
1937.02.22
申请号
GB19350017994
申请日期
1935.06.22
申请人
ALEXIS GUERBILSKY
发明人
分类号
H03H9/05
主分类号
H03H9/05
代理机构
代理人
主权项
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