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经营范围
发明名称
Mining machine
摘要
申请公布号
US2078944(A)
申请公布日期
1937.05.04
申请号
US19330658803
申请日期
1933.02.27
申请人
SULLIVAN MACHINERY COMPANY
发明人
HOLMES MORRIS P.
分类号
E21C29/10
主分类号
E21C29/10
代理机构
代理人
主权项
地址
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