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发明名称
Pencil eraser
摘要
申请公布号
US2177466(A)
申请公布日期
1939.10.24
申请号
US19380239987
申请日期
1938.11.12
申请人
W. A. SHEAFFER PEN COMPANY
发明人
STEMPEL HERMAN K.
分类号
B43K29/02
主分类号
B43K29/02
代理机构
代理人
主权项
地址
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