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经营范围
发明名称
Procédé pour améliorer l'étanchéité des canalisations
摘要
申请公布号
FR1150981(A)
申请公布日期
1958.01.22
申请号
FRD1150981
申请日期
1956.05.25
申请人
GAZ DE FRANCE
发明人
分类号
F16L55/163
主分类号
F16L55/163
代理机构
代理人
主权项
地址
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