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发明名称
Perfectionnements apportés aux moyens pour le creusement de puits, notamment de puits de mine circulaires
摘要
申请公布号
FR1005535(A)
申请公布日期
1952.04.11
申请号
FRD1005535
申请日期
1947.08.01
申请人
SOCIETE TECHNIQUE POUR L'INDUSTRIE MINIERE;SOCIETE ANONYME DES ANCIENS ETABLISSEMENTS DE HULSTER, FAIBIE & COMPAGNIE
发明人
分类号
E21D1/04
主分类号
E21D1/04
代理机构
代理人
主权项
地址
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Verpackungsschachtel
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