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发明名称
Piezoelectric crystal and condenser combination
摘要
申请公布号
US2508720(A)
申请公布日期
1950.05.23
申请号
US19470741835
申请日期
1947.04.16
申请人
KUENSTLER WALTER E
发明人
KUENSTLER WALTER E.
分类号
H03H9/05
主分类号
H03H9/05
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