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经营范围
发明名称
Signal discriminating circuit
摘要
申请公布号
GB2068696(A)
申请公布日期
1981.08.12
申请号
GB19810001869
申请日期
1981.01.22
申请人
ANSAFONE LTD
发明人
分类号
H04M1/654
主分类号
H04M1/654
代理机构
代理人
主权项
地址
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