Improvements to pabx working,申请号GB19630047657-传众专利搜索

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发明名称	Improvements to pabx working
摘要
申请公布号	GB989933(A)	申请公布日期	1965.04.22
申请号	GB19630047657	申请日期	1963.12.03
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人	KING JOHN ARTHUR BARFIELD;DASHWOOD RENE EDWIN
分类号	H04Q3/62	主分类号	H04Q3/62
代理机构		代理人
主权项
地址

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