Improvements in or relating to telephone apparatus employing loudspeaking equipment,申请号GB19360021297-传众专利搜索

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发明名称	Improvements in or relating to telephone apparatus employing loudspeaking equipment
摘要
申请公布号	GB479354(A)	申请公布日期	1938.01.31
申请号	GB19360021297	申请日期	1936.07.31
申请人	TELEPHONE MANUFACTURING COMPANY LIMITED;JAMES GEORGE FLINT;LEONARD ERNEST RYALL	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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