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经营范围
发明名称
Telephone signal filtering apparatus
摘要
申请公布号
GB9908549(D0)
申请公布日期
1999.06.09
申请号
GB19990008549
申请日期
1999.04.14
申请人
STATUS HI-TECH LIMITED
发明人
分类号
H04M1/57;H04M1/665;H04N1/32
主分类号
H04M1/57
代理机构
代理人
主权项
地址
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