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发明名称	CASSA ACUSTICA PER LA TRASDUZIONE DEL SUONO.
摘要
申请公布号	IT1238108(B)	申请公布日期	1993.07.07
申请号	IT19890067951	申请日期	1989.11.06
申请人		发明人
分类号	H04R1/28;H04R1/30;(IPC1-7):H04R	主分类号	H04R1/28
代理机构		代理人
主权项
地址

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