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发明名称
Improvements in or relating to the manufacture of points of ball point pens
摘要
申请公布号
GB837701(A)
申请公布日期
1960.06.15
申请号
GB19560019199
申请日期
1956.06.21
申请人
GUIDO BERTOGLIO
发明人
分类号
B21D53/76;B23B31/20;B43K7/00;B43K15/02
主分类号
B21D53/76
代理机构
代理人
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