MULTIPLE CONTACT OPERATING DEVICE,申请号CAD397133-传众专利搜索

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发明名称	MULTIPLE CONTACT OPERATING DEVICE
摘要
申请公布号	CA397133(A)	申请公布日期	1941.06.10
申请号	CAD397133	申请日期
申请人	NORTHERN ELECTRIC COMPANY	发明人	HEBERT FREDERICK OBERGFELL
分类号		主分类号
代理机构		代理人
主权项
地址

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