Photo-electric relay apparatus,申请号US19320619920-传众专利搜索

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法人/股东/高管

发明名称	Photo-electric relay apparatus
摘要
申请公布号	US1992055(A)	申请公布日期	1935.02.19
申请号	US19320619920	申请日期	1932.06.29
申请人	GENERAL ELECTRIC COMPANY	发明人	COCKRELL WILLIAM D.
分类号	H01J40/14	主分类号	H01J40/14
代理机构		代理人
主权项
地址

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