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发明名称
MECANISME DE RETRACTATION D'UN CRAYON OPTIQUE
摘要
申请公布号
FR2890198(B1)
申请公布日期
2007.11.30
申请号
FR20050008879
申请日期
2005.08.30
申请人
LIU JUNG TSAN
发明人
LIU JUNG TSAN
分类号
G06F3/033
主分类号
G06F3/033
代理机构
代理人
主权项
地址
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