THERMIONIC VALVE,申请号CAD339440-传众专利搜索

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发明名称	THERMIONIC VALVE
摘要
申请公布号	CA339440(A)	申请公布日期	1934.02.20
申请号	CAD339440	申请日期
申请人	WILLIAM RICHARD BULLIMORE	发明人	WILLIAM RICHARD BULLIMORE
分类号		主分类号
代理机构		代理人
主权项
地址

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