Improvements in electrical signalling systems,申请号GB19430011075-传众专利搜索

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发明名称	Improvements in electrical signalling systems
摘要
申请公布号	GB566779(A)	申请公布日期	1945.01.12
申请号	GB19430011075	申请日期	1943.07.08
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;GEORGE THOMAS BAKER;REGINALD TAYLOR	发明人
分类号	C03B5/12;H04Q3/62	主分类号	C03B5/12
代理机构		代理人
主权项
地址

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