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经营范围
发明名称
Variable inductance
摘要
申请公布号
US2139443(A)
申请公布日期
1938.12.06
申请号
US19360076365
申请日期
1936.04.25
申请人
RADIO CORPORATION
发明人
CRAYMER HENRY JAMES
分类号
H04B1/03
主分类号
H04B1/03
代理机构
代理人
主权项
地址
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