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发明名称
Pencil
摘要
申请公布号
US2103417(A)
申请公布日期
1937.12.28
申请号
US19340736944
申请日期
1934.07.25
申请人
WILHELM HAACK FRIEDRICH
发明人
HAACK FRIEDRICH WILHELM
分类号
B43K21/06
主分类号
B43K21/06
代理机构
代理人
主权项
地址
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