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经营范围
发明名称
Improvements in or relating to darts
摘要
申请公布号
GB592059(A)
申请公布日期
1947.09.05
申请号
GB19450004693
申请日期
1945.02.24
申请人
JOHN PINKNEY GOWLAND
发明人
分类号
F42B6/00
主分类号
F42B6/00
代理机构
代理人
主权项
地址
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