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经营范围
发明名称
Chapeau de mine métallique
摘要
申请公布号
FR1052017(A)
申请公布日期
1954.01.20
申请号
FRD1052017
申请日期
1952.03.03
申请人
DE DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG AGISSANT POUR ET AU NOM DE L'ETAT NEERLANDAIS
发明人
分类号
E21D17/01
主分类号
E21D17/01
代理机构
代理人
主权项
地址
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