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发明名称
BARRIERE DE SECURITE POUR ORIFICE NORMALEMENT OBTURE PERMETTANT L'ACCES A UN ESPACE INFERIEUR
摘要
申请公布号
FR2735507(B1)
申请公布日期
1998.02.20
申请号
FR19950006968
申请日期
1995.06.13
申请人
EAU ET FORCE
发明人
JALLIER MICHEL
分类号
E01F13/02;(IPC1-7):E01F13/04;E02D29/14;E03F5/02
主分类号
E01F13/02
代理机构
代理人
主权项
地址
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