ELECTROMAGNETIC CIRCUIT CLOSING DEVICE,申请号CAD299592-传众专利搜索

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发明名称	ELECTROMAGNETIC CIRCUIT CLOSING DEVICE
摘要
申请公布号	CA299592(A)	申请公布日期	1930.04.22
申请号	CAD299592	申请日期
申请人	THE NORTHERN ELECTRIC COMPANY	发明人	JOHN ERICKSON
分类号		主分类号
代理机构		代理人
主权项
地址

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