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经营范围
发明名称
Mining apparatus
摘要
申请公布号
US2202584(A)
申请公布日期
1940.05.28
申请号
US19350027212
申请日期
1935.06.18
申请人
SULLIVAN MACHINERY COMPANY
发明人
HOLMES MORRIS P.
分类号
E21C27/26
主分类号
E21C27/26
代理机构
代理人
主权项
地址
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