Improvements in apparatus making possible the permanent recording, automatically, of oral telephone conversations,申请号GB19370003956-传众专利搜索

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发明名称	Improvements in apparatus making possible the permanent recording, automatically, of oral telephone conversations
摘要
申请公布号	GB491010(A)	申请公布日期	1938.08.25
申请号	GB19370003956	申请日期	1937.02.10
申请人	PERCY FRANK TAYLOR	发明人
分类号	H04M1/65	主分类号	H04M1/65
代理机构		代理人
主权项
地址

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