Filament,申请号US19390268571-传众专利搜索

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发明名称	Filament
摘要
申请公布号	US2225239(A)	申请公布日期	1940.12.17
申请号	US19390268571	申请日期	1939.04.18
申请人	CHARLES SPAETH	发明人	SPAETH CHARLES
分类号	H01K3/02	主分类号	H01K3/02
代理机构		代理人
主权项
地址

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