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发明名称
Piezoelectric oscillator system
摘要
申请公布号
US2694779(A)
申请公布日期
1954.11.16
申请号
US19490117292
申请日期
1949.09.23
申请人
SELECTRONICS, INC.
发明人
MINNICH EDWARD L.
分类号
H03B5/34;H03H9/05
主分类号
H03B5/34
代理机构
代理人
主权项
地址
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