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发明名称
Radio apparatus
摘要
申请公布号
US2112382(A)
申请公布日期
1938.03.29
申请号
US19360074446
申请日期
1936.04.15
申请人
SEAR ARTHUR W
发明人
SEAR ARTHUR W.
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
主权项
地址
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