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经营范围
发明名称
Mining machine
摘要
申请公布号
US2007817(A)
申请公布日期
1935.07.09
申请号
US19300467745
申请日期
1930.07.14
申请人
GOODMAN MANUFACTURING COMPANY
发明人
SLOANE WILLIAM W.
分类号
E21C31/00
主分类号
E21C31/00
代理机构
代理人
主权项
地址
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