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经营范围
发明名称
Harmonic control
摘要
申请公布号
US1839442(A)
申请公布日期
1932.01.05
申请号
US19260157454
申请日期
1926.12.28
申请人
RADIO CORPORATION
发明人
SCHAFFER WALTER
分类号
H01P1/213
主分类号
H01P1/213
代理机构
代理人
主权项
地址
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