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发明名称
étançon de mine en deux pièces, en acier, comportant un dispositif de sécurité contre les surcharges brusques
摘要
申请公布号
FR1075608(A)
申请公布日期
1954.10.19
申请号
FRD1075608
申请日期
1953.03.11
申请人
发明人
BUSCHMANN ALFRED
分类号
E21D15/42
主分类号
E21D15/42
代理机构
代理人
主权项
地址
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