Improvements in or relating to Telephone Signalling Systems,申请号GB19670000698-传众专利搜索

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发明名称	Improvements in or relating to Telephone Signalling Systems
摘要
申请公布号	GB1157761(A)	申请公布日期	1969.07.09
申请号	GB19670000698	申请日期	1967.01.05
申请人	THE GENERAL ELECTRIC & ENGLISH ELECTRIC COMPANIESLIMITED (FORMERLY KNOWN AS THE GENERAL ELECTRIC COMPANY LIMITED)	发明人	PHILIP JOHN WILLIAMS
分类号	H04Q1/453	主分类号	H04Q1/453
代理机构		代理人
主权项
地址

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