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经营范围
发明名称
Procédé de construction de tuyaux en acier à enrobage de béton pour fluides de toute nature et tuyaux obtenus par ce procédé
摘要
申请公布号
FR871574(A)
申请公布日期
1942.04.30
申请号
FRD871574
申请日期
1940.12.16
申请人
LE TUBE D'ACIER
发明人
分类号
B28B21/58;F16L9/08;F16L13/02
主分类号
B28B21/58
代理机构
代理人
主权项
地址
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