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发明名称
Procédé de frettage d'ouvrages cylindriques en béton et appareils destinés à la mise en oeuvre de ce procédé
摘要
申请公布号
FR922866(A)
申请公布日期
1947.06.20
申请号
FRD922866
申请日期
1946.01.09
申请人
SECHAUD & METZ
发明人
分类号
B28B23/14
主分类号
B28B23/14
代理机构
代理人
主权项
地址
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