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经营范围
发明名称
Improvements in or relating to ball-point pens
摘要
申请公布号
GB774238(A)
申请公布日期
1957.05.08
申请号
GB19550008442
申请日期
1955.03.23
申请人
W. A. SHEAFFER PEN COMPANY
发明人
分类号
B43K7/08
主分类号
B43K7/08
代理机构
代理人
主权项
地址
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