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发明名称
Alternate telephone ringer
摘要
申请公布号
GB2300994(A8)
申请公布日期
1996.11.25
申请号
GB19960010691
申请日期
1996.05.22
申请人
CLIFFORD HUGO WILLIAM
发明人
HUGO WILLIAM CLIFFORD
分类号
H04M19/04;(IPC1-7):H04M19/04
主分类号
H04M19/04
代理机构
代理人
主权项
地址
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