ELECTRICAL SIGNALLING AND/OR AMPLIFYING SYSTEMS,申请号CAD528846-传众专利搜索

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发明名称	ELECTRICAL SIGNALLING AND/OR AMPLIFYING SYSTEMS
摘要
申请公布号	CA528846(A)	申请公布日期	1956.08.07
申请号	CAD528846	申请日期
申请人	NATIONAL RESEARCH DEVELOPMENT CORPORATION	发明人	RONALD H. BARKER
分类号		主分类号
代理机构		代理人
主权项
地址

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