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发明名称
Radio system
摘要
申请公布号
US1799976(A)
申请公布日期
1931.04.07
申请号
US19270159327
申请日期
1927.01.06
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
FALKNOR FRANK B.
分类号
H04H20/67
主分类号
H04H20/67
代理机构
代理人
主权项
地址
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