ELECTRICAL CONTACT DEVICE,申请号CAD447423-传众专利搜索

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发明名称	ELECTRICAL CONTACT DEVICE
摘要
申请公布号	CA447423(A)	申请公布日期	1948.03.23
申请号	CAD447423	申请日期
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	ROBERT E. PARIS
分类号		主分类号
代理机构		代理人
主权项
地址

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