Circuit for negative glow devices,申请号US19310516079-传众专利搜索

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发明名称	Circuit for negative glow devices
摘要
申请公布号	US2072622(A)	申请公布日期	1937.03.02
申请号	US19310516079	申请日期	1931.02.16
申请人	HENNINGER JR ANDREW F	发明人	JR. ANDREW F. HENNINGER,
分类号	H05B41/44	主分类号	H05B41/44
代理机构		代理人
主权项
地址

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