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发明名称
Pushing device for shifting mining machinery
摘要
申请公布号
US2948508(A)
申请公布日期
1960.08.09
申请号
US19580721931
申请日期
1958.03.17
申请人
DOWTY MINING EQUIPMENT LIMITED
发明人
BARRETT WESLEY HORACE
分类号
E21F13/08
主分类号
E21F13/08
代理机构
代理人
主权项
地址
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