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经营范围
发明名称
Mining machine
摘要
申请公布号
US2068070(A)
申请公布日期
1937.01.19
申请号
US19350041737
申请日期
1935.09.23
申请人
GOODMAN MANUFACTURING COMPANY
发明人
PRAY THOMAS E.
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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