Ratio-adjusting switch,申请号US19290397124-传众专利搜索

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发明名称	Ratio-adjusting switch
摘要
申请公布号	US1785575(A)	申请公布日期	1930.12.16
申请号	US19290397124	申请日期	1929.10.03
申请人	GENERAL ELECTRIC COMPANY	发明人	BLUME LOUIS F.
分类号	H01H9/00	主分类号	H01H9/00
代理机构		代理人
主权项
地址

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