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发明名称
DISPOSITIF GONFLABLE POUR LE LEVAGE D'UNE CONDUITE SUPPORTEE PAR UN FOND AQUATIQUE ET PROCEDE DE MISE EN OEUVRE
摘要
申请公布号
FR2476263(B1)
申请公布日期
1985.07.19
申请号
FR19800003352
申请日期
1980.02.15
申请人
PRONAL SA
发明人
分类号
E02D29/09;F16L1/20;(IPC1-7):F16L1/04;B66F3/24
主分类号
E02D29/09
代理机构
代理人
主权项
地址
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