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经营范围
发明名称
Machine minière
摘要
申请公布号
FR911864(A)
申请公布日期
1946.07.23
申请号
FRD911864
申请日期
1945.06.29
申请人
发明人
RAMSAY ERSKINE
分类号
E21C25/68
主分类号
E21C25/68
代理机构
代理人
主权项
地址
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