Private branch exchange telephone system,申请号US19600046597-传众专利搜索

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发明名称	Private branch exchange telephone system
摘要
申请公布号	US3087025(A)	申请公布日期	1963.04.23
申请号	US19600046597	申请日期	1960.08.01
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	ABBOTT HENRY H.;MARTIN CHARLES R.;PREVITE RICHARD A.;WALSH HENRY J.;WALSH JOHN G.
分类号	H04M9/00	主分类号	H04M9/00
代理机构		代理人
主权项
地址

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