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经营范围
发明名称
Beat frequency oscillator
摘要
申请公布号
US2783379(A)
申请公布日期
1957.02.26
申请号
US19550483599
申请日期
1955.01.24
申请人
LAWRENCE FLEMING
发明人
FLEMING LAWRENCE
分类号
H03B21/01
主分类号
H03B21/01
代理机构
代理人
主权项
地址
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