Improvements in telephone or like systems,申请号GB19430007770-传众专利搜索

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发明名称	Improvements in telephone or like systems
摘要
申请公布号	GB565639(A)	申请公布日期	1944.11.20
申请号	GB19430007770	申请日期	1943.05.15
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;CHARLES GILLINGS;CHARLES EDMUND BEALE	发明人
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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