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发明名称
ARROW RECOGNIZING METHOD
摘要
申请公布号
JPS6461880(A)
申请公布日期
1989.03.08
申请号
JP19870219354
申请日期
1987.09.02
申请人
RICOH CO LTD
发明人
SAWADA NOZOMI
分类号
G06T7/00
主分类号
G06T7/00
代理机构
代理人
主权项
地址
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