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经营范围
发明名称
Improvements relating to hailing equipment
摘要
申请公布号
GB929851(A)
申请公布日期
1963.06.26
申请号
GB19610017080
申请日期
1961.05.10
申请人
GUY RUPERT FOUNTAIN
发明人
分类号
H04R27/04
主分类号
H04R27/04
代理机构
代理人
主权项
地址
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