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发明名称
ECHO CANCELLER
摘要
申请公布号
JPH09162787(A)
申请公布日期
1997.06.20
申请号
JP19950344600
申请日期
1995.12.05
申请人
RICOH CO LTD
发明人
SAKAYORI TETSUYA
分类号
G10K11/178;H03H21/00;H04B3/23;(IPC1-7):H04B3/23
主分类号
G10K11/178
代理机构
代理人
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地址
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