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发明名称
PERCUSSION ROCK DRILLING MACHINES
摘要
申请公布号
CA734820(A)
申请公布日期
1966.05.24
申请号
CAD734820
申请日期
申请人
RAND MINES;CECIL J. IRVING
发明人
CECIL J. IRVING
分类号
主分类号
代理机构
代理人
主权项
地址
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