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经营范围
发明名称
Vernier condenser
摘要
申请公布号
US2313429(A)
申请公布日期
1943.03.09
申请号
US19390275692
申请日期
1939.05.25
申请人
RADIO CORPORATION OF AMERICA
发明人
GODDARD DE WITT RUGG
分类号
主分类号
代理机构
代理人
主权项
地址
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