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经营范围
发明名称
ECHO CANCELLER
摘要
申请公布号
CA2004005(A1)
申请公布日期
1990.06.01
申请号
CA19892004005
申请日期
1989.11.28
申请人
N.V. PHILLIPS' GLOEILAMPENFABRIEKEN
发明人
BROX, WOLFGANG;VARY, PETER
分类号
H03H17/00;H03H21/00;H04B3/23;H04M9/08
主分类号
H03H17/00
代理机构
代理人
主权项
地址
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