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经营范围
发明名称
Procédé et appareil pour l'exploitation des mines
摘要
申请公布号
FR722126(A)
申请公布日期
1932.03.11
申请号
FRD722126
申请日期
1931.08.20
申请人
发明人
CALLUM THOMAS MAC
分类号
E01B23/04
主分类号
E01B23/04
代理机构
代理人
主权项
地址
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