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发明名称
Drum mounted cutter bit and breaker for mining machines
摘要
申请公布号
US2670190(A)
申请公布日期
1954.02.23
申请号
US19510206797
申请日期
1951.01.19
申请人
GOODMAN MANUFACTURING COMPANY
发明人
CARTLIDGE FRANK
分类号
E21C27/16
主分类号
E21C27/16
代理机构
代理人
主权项
地址
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