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经营范围
发明名称
Resonance indicator
摘要
申请公布号
US2087652(A)
申请公布日期
1937.07.20
申请号
US19350045217
申请日期
1935.10.16
申请人
RADIO CORPORATION OF AMERICA
发明人
OAKLEY HENRY D.
分类号
G01R23/00
主分类号
G01R23/00
代理机构
代理人
主权项
地址
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