DEAF-AID APPLIANCES,申请号IE19530000699-传众专利搜索

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发明名称	DEAF-AID APPLIANCES
摘要
申请公布号	IE20819(L)	申请公布日期	1954.07.26
申请号	IE19530000699	申请日期	1953.12.30
申请人	AUDI-VIS (LANCS) LIMITED	发明人
分类号	G02C11/06;H04R25/00;(IPC1-7):G02C11/06;G10K/00	主分类号	G02C11/06
代理机构		代理人
主权项
地址

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