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经营范围
发明名称
Improvements in or relating to pens for recording apparatus
摘要
申请公布号
GB716988(A)
申请公布日期
1954.10.20
申请号
GB19520002503
申请日期
1952.01.30
申请人
KELVIN & HUGHES LIMITED
发明人
SHOESMITH KENNETH CHARLES
分类号
G01D15/16;H04L15/30
主分类号
G01D15/16
代理机构
代理人
主权项
地址
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