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发明名称
Perfectionnement apporté aux dispositifs d'appui pour boulons de soutènement
摘要
申请公布号
FR89582(E)
申请公布日期
1967.07.13
申请号
FR19660050391
申请日期
1966.02.21
申请人
发明人
BOCK JEAN-PIERRE WILLY;BOCK
分类号
E21D21/00
主分类号
E21D21/00
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