Range selector (telegraph switching),申请号US19570641745-传众专利搜索

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发明名称	Range selector (telegraph switching)
摘要
申请公布号	US2945093(A)	申请公布日期	1960.07.12
申请号	US19570641745	申请日期	1957.02.21
申请人	GENERAL DYNAMICS CORPORATION	发明人	PAUL GERALD R.;JR. CHARLES R. FISHER,
分类号	H04L25/45	主分类号	H04L25/45
代理机构		代理人
主权项
地址

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