Method of producing electron bulbs with high emission cathodes,申请号US19320642191-传众专利搜索

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发明名称	Method of producing electron bulbs with high emission cathodes
摘要
申请公布号	US2016699(A)	申请公布日期	1935.10.08
申请号	US19320642191	申请日期	1932.11.11
申请人	ERNST WALDSCHMIDT	发明人	WALDSCHMIDT ERNST
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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