HEARING AID ATTACHMENT FOR SPECTACLES,申请号CAD490364-传众专利搜索

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发明名称	HEARING AID ATTACHMENT FOR SPECTACLES
摘要
申请公布号	CA490364(A)	申请公布日期	1953.02.10
申请号	CAD490364	申请日期
申请人	GEORGE P. KIMMEL	发明人	GEORGE P. KIMMEL
分类号		主分类号
代理机构		代理人
主权项
地址

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