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发明名称
Piezoelectric device
摘要
申请公布号
US2945984(A)
申请公布日期
1960.07.19
申请号
US19590827891
申请日期
1959.07.17
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
YANDO STEPHEN
分类号
H03H9/30;H03K17/00
主分类号
H03H9/30
代理机构
代理人
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地址
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