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经营范围
发明名称
Mining machine
摘要
申请公布号
US1968054(A)
申请公布日期
1934.07.31
申请号
US19300491971
申请日期
1930.10.29
申请人
SULLIVAN MACHINERY COMPANY
发明人
OSGOOD CHARLES F.
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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