SYNCHRONOUS TELEPGRAPH SYSTEM PHASING DEVICE,申请号CAD444289-传众专利搜索

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发明名称	SYNCHRONOUS TELEPGRAPH SYSTEM PHASING DEVICE
摘要
申请公布号	CA444289(A)	申请公布日期	1947.09.23
申请号	CAD444289	申请日期
申请人	RADIO CORPORATION OF AMERICA	发明人	JOHN L. CALLAHAN
分类号		主分类号
代理机构		代理人
主权项
地址

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