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发明名称
Tool for assembling mechanical pencils
摘要
申请公布号
US2312928(A)
申请公布日期
1943.03.02
申请号
US19410396634
申请日期
1941.06.04
申请人
DAVID KAHN, INC.
发明人
PARA JOHN WILLIAM
分类号
B25B27/00;B43K21/24
主分类号
B25B27/00
代理机构
代理人
主权项
地址
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