Automatic switching system,申请号US19340742371-传众专利搜索

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发明名称	Automatic switching system
摘要
申请公布号	US2018495(A)	申请公布日期	1935.10.22
申请号	US19340742371	申请日期	1934.09.01
申请人	GENERAL ELECTRIC COMPANY	发明人	HOFFMANN DANIEL C.
分类号	H02H3/06	主分类号	H02H3/06
代理机构		代理人
主权项
地址

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