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经营范围
发明名称
Improvements in or relating to magnetic compass
摘要
申请公布号
GB663589(A)
申请公布日期
1951.12.27
申请号
GB19490017754
申请日期
1949.07.05
申请人
THE REECE CORPORATION
发明人
分类号
G01C17/00
主分类号
G01C17/00
代理机构
代理人
主权项
地址
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