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发明名称
Drafting table
摘要
申请公布号
US2350340(A)
申请公布日期
1944.06.06
申请号
US19420428082
申请日期
1942.01.24
申请人
DARBY JOHN J
发明人
DARBY JOHN J.
分类号
B43L5/00
主分类号
B43L5/00
代理机构
代理人
主权项
地址
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