ELECTRON TUBES,申请号CAD484724-传众专利搜索

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发明名称	ELECTRON TUBES
摘要
申请公布号	CA484724(A)	申请公布日期	1952.07.08
申请号	CAD484724	申请日期
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人	GERARD LEHMANN
分类号		主分类号
代理机构		代理人
主权项
地址

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