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发明名称
Procédé d'étançonnement et étançon pour la mise en oeuvre dudit procédé
摘要
申请公布号
FR968059(A)
申请公布日期
1950.11.17
申请号
FRD968059
申请日期
1948.06.01
申请人
发明人
VANWERSCH LUDWIG
分类号
E21D15/40
主分类号
E21D15/40
代理机构
代理人
主权项
地址
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