Highway party line system,申请号US19610141691-传众专利搜索

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发明名称	Highway party line system
摘要
申请公布号	US3154642(A)	申请公布日期	1964.10.27
申请号	US19610141691	申请日期	1961.09.29
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HALL WILLIAM G.;ROETKEN ALFRED A.
分类号	H04Q5/00	主分类号	H04Q5/00
代理机构		代理人
主权项
地址

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