Acoustic signalling means particularly for telephone sets,申请号GB19650031808-传众专利搜索

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发明名称	Acoustic signalling means particularly for telephone sets
摘要
申请公布号	GB1128053(A)	申请公布日期	1968.09.25
申请号	GB19650031808	申请日期	1965.07.26
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人	WHY JOHN FREDERICK;PAPADOPOULOS ATHANASIOS
分类号	H04M19/04	主分类号	H04M19/04
代理机构		代理人
主权项
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