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经营范围
发明名称
CONTINUOUS MINER
摘要
申请公布号
GB2142678(B)
申请公布日期
1987.05.07
申请号
GB19840013613
申请日期
1984.05.29
申请人
* JOY MANUFACTURING COMPANY
发明人
EDWARD * WECHNER
分类号
E21C27/22;(IPC1-7):E21C27/24;E21D9/10
主分类号
E21C27/22
代理机构
代理人
主权项
地址
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