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发明名称
HIGH FREQUENCY RECEIVING SYSTEM
摘要
申请公布号
CA303007(A)
申请公布日期
1930.08.12
申请号
CAD303007
申请日期
申请人
THE FEDERAL TELEGRAPH COMPANY;THE WIRED RADIO
发明人
JOSEPH L. CASSELL
分类号
主分类号
代理机构
代理人
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