ECHO ELIMINATION DEVICE,申请号JP19920044649-传众专利搜索

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发明名称	ECHO ELIMINATION DEVICE
摘要
申请公布号	JPH05244043(A)	申请公布日期	1993.09.21
申请号	JP19920044649	申请日期	1992.03.02
申请人	NIPPON TELEGR & TELEPH CORP <NTT>	发明人	MAKINO SHOJI;KANEDA YUTAKA
分类号	H03H21/00;H03H17/00;H03H17/04;H04B3/23;(IPC1-7):H04B3/23	主分类号	H03H21/00
代理机构		代理人
主权项
地址

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