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经营范围
发明名称
NOISE CANCELLER
摘要
申请公布号
JPH01141478(A)
申请公布日期
1989.06.02
申请号
JP19870300902
申请日期
1987.11.27
申请人
NEC CORP
发明人
AKAO KIYOSHI
分类号
H04N5/93
主分类号
H04N5/93
代理机构
代理人
主权项
地址
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