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发明名称
NOISE CANCELLER DEVICE
摘要
申请公布号
JPH04340599(A)
申请公布日期
1992.11.26
申请号
JP19910141091
申请日期
1991.05.16
申请人
RICOH CO LTD
发明人
MATSUSHITA MITSUGI
分类号
G10L15/20;G10L21/02
主分类号
G10L15/20
代理机构
代理人
主权项
地址
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