NOISE REDUCTION SYSTEM,申请号GB19890017741-传众专利搜索

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发明名称	NOISE REDUCTION SYSTEM
摘要
申请公布号	GB8917741(D0)	申请公布日期	1989.09.20
申请号	GB19890017741	申请日期	1989.08.03
申请人	PLESSEY COMPANY, PLC THE	发明人
分类号	A61F11/14;G10K11/178	主分类号	A61F11/14
代理机构		代理人
主权项
地址

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