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发明名称
Drill boom support for a drill rig.
摘要
申请公布号
ZA9904044(B)
申请公布日期
1999.12.20
申请号
ZA19990004044
申请日期
1999.06.18
申请人
HYDRO POWER ENGINEERING (PROPRIETARY) LIMITED;NORTHAM PLATINUM LIMITED
发明人
RUDOLPH BUHRMAN
分类号
E21C
主分类号
E21C
代理机构
代理人
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