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经营范围
发明名称
Mining machine
摘要
申请公布号
US1884696(A)
申请公布日期
1932.10.25
申请号
US19300463776
申请日期
1930.06.25
申请人
SULLIVAN MACHINERY COMPANY
发明人
HOLMES MORRIS P.
分类号
E21C25/30
主分类号
E21C25/30
代理机构
代理人
主权项
地址
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