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发明名称
Continuous mining apparatus having core forming means and multiple core dislodging devices
摘要
申请公布号
US2910283(A)
申请公布日期
1959.10.27
申请号
US19500194259
申请日期
1950.11.06
申请人
JOY MANUFACTURING COMPANY
发明人
JOY JOSEPH F.
分类号
E21C27/12
主分类号
E21C27/12
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