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发明名称
Improvements in safety fasteners for fountain pens, pencils and the like
摘要
申请公布号
GB516509(A)
申请公布日期
1940.01.03
申请号
GB19390001963
申请日期
1939.01.20
申请人
EDWARD ALEXANDER MATTHIAS
发明人
分类号
B43K25/02
主分类号
B43K25/02
代理机构
代理人
主权项
地址
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