Alternating-current relay,申请号US19250069130-传众专利搜索

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发明名称	Alternating-current relay
摘要
申请公布号	US1795144(A)	申请公布日期	1931.03.03
申请号	US19250069130	申请日期	1925.11.14
申请人	GENERAL RAILWAY SIGNAL COMPANY	发明人	ROSS OSCAR A.
分类号	H01H51/30	主分类号	H01H51/30
代理机构		代理人
主权项
地址

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