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经营范围
发明名称
ECHO CANCELER
摘要
申请公布号
JPH0388518(A)
申请公布日期
1991.04.12
申请号
JP19890223255
申请日期
1989.08.31
申请人
FUJITSU LTD
发明人
ASHIYARIFU MOHAMATSUDO REZAA;AMANO FUMIO;SAKAI YOSHIHIRO;UMIGAMI SHIGEYUKI
分类号
H04B3/23
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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