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发明名称
A method of mining and an improved mining machine
摘要
申请公布号
AUPR947801(D0)
申请公布日期
2002.01.24
申请号
AU2001PR09478
申请日期
2001.12.13
申请人
JOY MM DELAWARE INC.
发明人
分类号
E21C27/24;E21C31/08;E21D20/00
主分类号
E21C27/24
代理机构
代理人
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