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发明名称
Drafting machine
摘要
申请公布号
US2400733(A)
申请公布日期
1946.05.21
申请号
US19390303558
申请日期
1939.11.09
申请人
KEUFFEL & ESSER COMPANY
发明人
BAKER ALLISTER L.
分类号
B43L13/08
主分类号
B43L13/08
代理机构
代理人
主权项
地址
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