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经营范围
发明名称
ECRAN DE RETROPROJECTION
摘要
申请公布号
FR2920889(B1)
申请公布日期
2009.12.04
申请号
FR20070057439
申请日期
2007.09.07
申请人
ECRANPLUS
发明人
PONS FREDERIC
分类号
G03B21/56;G02B27/18;G09F19/18
主分类号
G03B21/56
代理机构
代理人
主权项
地址
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