Device for the radiation of sound waves,申请号GB19590038135-传众专利搜索

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发明名称	Device for the radiation of sound waves
摘要
申请公布号	GB887571(A)	申请公布日期	1962.01.17
申请号	GB19590038135	申请日期	1959.11.10
申请人	ALBERT AUGUST WILHELM JOHAN VAN HEDEL	发明人
分类号	H04R1/34	主分类号	H04R1/34
代理机构		代理人
主权项
地址

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