Improvements in or relating to telephone systems,申请号GB19560019834-传众专利搜索

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发明名称	Improvements in or relating to telephone systems
摘要
申请公布号	GB831188(A)	申请公布日期	1960.03.23
申请号	GB19560019834	申请日期	1956.06.27
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED	发明人	MARWING KENNETH GEORGE;GREENAWAY JOHN FRANK;MILTON ROBERT HENRY
分类号	H04M15/04;H04Q3/42	主分类号	H04M15/04
代理机构		代理人
主权项
地址

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