IMPROVEMENTS IN AND RELATING TO AN ACOUSTIC TRANSDUCER,申请号GB19690061784-传众专利搜索

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发明名称	IMPROVEMENTS IN AND RELATING TO AN ACOUSTIC TRANSDUCER
摘要
申请公布号	GB1298568(A)	申请公布日期	1972.12.06
申请号	GB19690061784	申请日期	1969.12.18
申请人	AUDIO ARTS INCORPORATED	发明人
分类号	H04R9/02	主分类号	H04R9/02
代理机构		代理人
主权项
地址

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