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发明名称
Mining machine having pivotally mounted cutters
摘要
申请公布号
US3061290(A)
申请公布日期
1962.10.30
申请号
US19570698498
申请日期
1957.11.25
申请人
JOY MANUFACTURING COMPANY
发明人
SIBLEY JOHN R.
分类号
E21C27/12
主分类号
E21C27/12
代理机构
代理人
主权项
地址
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