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发明名称
Perspective drafting device
摘要
申请公布号
US2982027(A)
申请公布日期
1961.05.02
申请号
US19580762373
申请日期
1958.09.22
申请人
HARCHIKOV KONSTANTIN F
发明人
HARCHIKOV KONSTANTIN F.
分类号
B43L13/14
主分类号
B43L13/14
代理机构
代理人
主权项
地址
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