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发明名称
Radio communication system
摘要
申请公布号
US2057640(A)
申请公布日期
1936.10.13
申请号
US19270176060
申请日期
1927.03.17
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
CONRAD FRANK
分类号
H03D3/16
主分类号
H03D3/16
代理机构
代理人
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地址
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