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经营范围
发明名称
A ringing voltage generator
摘要
申请公布号
GB2202714(A)
申请公布日期
1988.09.28
申请号
GB19880002917
申请日期
1988.02.09
申请人
* LAKE ELECTRONIC TECHNOLOGIES LIMITED
发明人
JOHN MARY * WALTERS;AUGUSTINE ANTHONY * BERMINGHAM
分类号
H04M19/02;(IPC1-7):H04M19/02
主分类号
H04M19/02
代理机构
代理人
主权项
地址
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