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发明名称
Pencil sharpening device adapted to be secured on the hand
摘要
申请公布号
GB504339(A)
申请公布日期
1939.04.24
申请号
GB19380031472
申请日期
1938.10.31
申请人
BERNHARD KURT DOBKOWITZ
发明人
分类号
B43L23/00
主分类号
B43L23/00
代理机构
代理人
主权项
地址
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