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发明名称
Piezoelectric crystal holder
摘要
申请公布号
US2507374(A)
申请公布日期
1950.05.09
申请号
US19470788256
申请日期
1947.11.26
申请人
RADIO CORPORATION
发明人
FRANKLIN RALPH E.;MILLER WILLIAM A.
分类号
H03H9/05
主分类号
H03H9/05
代理机构
代理人
主权项
地址
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