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发明名称
Improvements in drawing compasses
摘要
申请公布号
GB972461(A)
申请公布日期
1964.10.14
申请号
GB19630012919
申请日期
1963.04.02
申请人
W.J. HARRIS (BIRMINGHAM) LIMITED
发明人
COOK FREDERICK CHARLES
分类号
B43L9/24
主分类号
B43L9/24
代理机构
代理人
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