Method of carburizing tungsten filaments,申请号US19510243889-传众专利搜索

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发明名称	Method of carburizing tungsten filaments
摘要
申请公布号	US2721155(A)	申请公布日期	1955.10.18
申请号	US19510243889	申请日期	1951.08.27
申请人	EITEL-MCCULLOUGH, INC.	发明人	WILLIAMS PAUL D.
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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