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经营范围
发明名称
Mounting knock-off drill bits
摘要
申请公布号
ZA9406514(B)
申请公布日期
1995.03.28
申请号
ZA19940006514
申请日期
1994.08.26
申请人
GALISON DRILLING (PTY) LTD
发明人
PETER REDVERS THORBURN
分类号
E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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