Manufacture of electron-emitting devices and the like,申请号US19220577021-传众专利搜索

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发明名称	Manufacture of electron-emitting devices and the like
摘要
申请公布号	US1760454(A)	申请公布日期	1930.05.27
申请号	US19220577021	申请日期	1922.07.24
申请人	WESTINGHOUSE LAMP COMPANY	发明人	ULREY CLAYTON TRIDLE
分类号	H01J9/04	主分类号	H01J9/04
代理机构		代理人
主权项
地址

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