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发明名称
Pencil and eraser
摘要
申请公布号
US2132942(A)
申请公布日期
1938.10.11
申请号
US19380198199
申请日期
1938.03.26
申请人
WALLACE PENCIL COMPANY
发明人
FORSYTH ARTHUR W.
分类号
B43K29/02
主分类号
B43K29/02
代理机构
代理人
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