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发明名称	RADIO COURSE INDICATOR
摘要
申请公布号	CA399210(A)	申请公布日期	1941.09.09
申请号	CAD399210	申请日期
申请人	RADIO CORPORATION OF AMERICA	发明人	VLADIMIR K. ZWORYKIN
分类号		主分类号
代理机构		代理人
主权项
地址

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