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发明名称
Improvements in or relating to ball-pointed writing instruments
摘要
申请公布号
GB727962(A)
申请公布日期
1955.04.13
申请号
GB19500007193
申请日期
1950.03.22
申请人
MENTMORE MANUFACTURING CO. LIMITED
发明人
JOHNSON WILLIAM FREDERICK
分类号
B02C17/14;B43K7/08
主分类号
B02C17/14
代理机构
代理人
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