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发明名称
Answer sheet adapted for computer scoring
摘要
An answer sheet adapted for computer scoring has a first mark enclosing a space, printed on the sheet, and a second mark enclosing a space, printed on the sheet, wherein the second mark is encompassed by the first mark.
申请公布号
US2006073465(A1)
申请公布日期
2006.04.06
申请号
US20040936671
申请日期
2004.09.09
申请人
KUBO HIDEYUKI
发明人
KUBO HIDEYUKI
分类号
G09B3/00
主分类号
G09B3/00
代理机构
代理人
主权项
地址
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