Method of manufacturing vacuum tubes,申请号US19570703479-传众专利搜索

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发明名称	Method of manufacturing vacuum tubes
摘要
申请公布号	US2984534(A)	申请公布日期	1961.05.16
申请号	US19570703479	申请日期	1957.12.18
申请人	TELEFUNKEN G.M.B.H.	发明人	KALLWEIT HERBERT;VEITH KARL M.
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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