ACTIVE NOISE CONTROL APPARATUS,申请号JP19900292930-传众专利搜索

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发明名称	ACTIVE NOISE CONTROL APPARATUS
摘要
申请公布号	JPH04165398(A)	申请公布日期	1992.06.11
申请号	JP19900292930	申请日期	1990.10.30
申请人	RICOH CO LTD	发明人	FUKUMIZU KENJI
分类号	G01H3/00;G10K11/16;G10K11/178;H03H21/00;H04B3/04	主分类号	G01H3/00
代理机构		代理人
主权项
地址

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