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发明名称
Drafting equipment
摘要
申请公布号
US2558468(A)
申请公布日期
1951.06.26
申请号
US19480007873
申请日期
1948.02.12
申请人
ENGINEERING MANUFACTURING CO.
发明人
STOVERN INGRAM V.
分类号
B43L13/04
主分类号
B43L13/04
代理机构
代理人
主权项
地址
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