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经营范围
发明名称
Piezoelectric crystal assembly
摘要
申请公布号
US2824219(A)
申请公布日期
1958.02.18
申请号
US19540467342
申请日期
1954.11.08
申请人
MIDLAND MANUFACTURING CO., INC.
发明人
FISHER GEORGE F.;DILLON HOWARD E.
分类号
G04F5/06;H03H9/10
主分类号
G04F5/06
代理机构
代理人
主权项
地址
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