Selective switching system,申请号US19590821617-传众专利搜索

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发明名称	Selective switching system
摘要
申请公布号	US2958730(A)	申请公布日期	1960.11.01
申请号	US19590821617	申请日期	1959.06.19
申请人	MYERS GEORGE H	发明人	MYERS GEORGE H.
分类号	H03K17/74;H04M9/00	主分类号	H03K17/74
代理机构		代理人
主权项
地址

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