Deaf aid apparatus,申请号GB19560039676-传众专利搜索

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发明名称	Deaf aid apparatus
摘要
申请公布号	GB823433(A)	申请公布日期	1959.11.11
申请号	GB19560039676	申请日期	1956.12.31
申请人	E. SHIPTON & COMPANY LIMITED	发明人	SHIPTON EDWARD
分类号	H04R27/02	主分类号	H04R27/02
代理机构		代理人
主权项
地址

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