PIEZOELECTRIC SOUND TRANSDUCER,申请号EP19870111434-传众专利搜索

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发明名称	PIEZOELECTRIC SOUND TRANSDUCER
摘要
申请公布号	EP0264557(A3)	申请公布日期	1989.12.06
申请号	EP19870111434	申请日期	1987.08.07
申请人	STETTNER & CO.	发明人	BERTL, GERD
分类号	H04R17/10;H04R17/00;(IPC1-7):H04R17/00	主分类号	H04R17/10
代理机构		代理人
主权项
地址

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