POLYPHASE ELECTRON TUBE GENERATOR,申请号CAD309118-传众专利搜索

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发明名称	POLYPHASE ELECTRON TUBE GENERATOR
摘要
申请公布号	CA309118(A)	申请公布日期	1931.03.03
申请号	CAD309118	申请日期
申请人	THE WIRED RADIO	发明人	ROBERT D. DUNCAN, JR.
分类号		主分类号
代理机构		代理人
主权项
地址

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