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发明名称
Support d'allonges, notamment pour chapeaux de cadres de soutènement de galeries demines
摘要
申请公布号
FR1151822(A)
申请公布日期
1958.02.06
申请号
FRD1151822
申请日期
1956.06.23
申请人
发明人
WEIL PAUL
分类号
E21D17/03;E21D17/06
主分类号
E21D17/03
代理机构
代理人
主权项
地址
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