Improvements in or relating to telephone systems,申请号GB19430008964-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	GB566020(A)	申请公布日期	1944.12.08
申请号	GB19430008964	申请日期	1943.06.04
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;WILLIE SAVILLE;THOMAS PHILIP PREIST;GEORGE WILLIAM THOMPSON	发明人
分类号	H04M1/18	主分类号	H04M1/18
代理机构		代理人
主权项
地址

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