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经营范围
发明名称
Crystal controlled oscillator
摘要
申请公布号
US2027448(A)
申请公布日期
1936.01.14
申请号
US19270176877
申请日期
1927.03.21
申请人
RADIO CORPORATION OF AMERICA
发明人
PETERSON HAROLD O.
分类号
H03B5/34
主分类号
H03B5/34
代理机构
代理人
主权项
地址
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