Equipment for operator served calls at an intermediate switching center,申请号US19630318275-传众专利搜索

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发明名称	Equipment for operator served calls at an intermediate switching center
摘要
申请公布号	US3341661(A)	申请公布日期	1967.09.12
申请号	US19630318275	申请日期	1963.10.23
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	CURTIS ROBERT B.
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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