ECHO CANCELLER CONTROL SYSTEM,申请号JP19910156222-传众专利搜索

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发明名称	ECHO CANCELLER CONTROL SYSTEM
摘要
申请公布号	JPH04355549(A)	申请公布日期	1992.12.09
申请号	JP19910156222	申请日期	1991.05.31
申请人	NEC CORP	发明人	MIYAHARA KEIICHI
分类号	H04B3/23;H04M3/22	主分类号	H04B3/23
代理机构		代理人
主权项
地址

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