método e dispositivo para a projeção de ondas sonoras em alto-falantes.,申请号BR19970012912-传众专利搜索

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发明名称	método e dispositivo para a projeção de ondas sonoras em alto-falantes.
摘要
申请公布号	BR9712912(B1)	申请公布日期	2010.11.30
申请号	BR19970012912	申请日期	1997.10.25
申请人		发明人	JOHANNES BOEHM;JENS SPILLE
分类号	H04S1/00;H04S5/02	主分类号	H04S1/00
代理机构		代理人
主权项
地址

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