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发明名称
Rock Bolt
摘要
申请公布号
ZA200907142(B)
申请公布日期
2010.06.30
申请号
ZA20090007142
申请日期
2009.10.12
申请人
AVENG (AFRICA) LIMITED
发明人
VAN DER BERG, BERTRAND
分类号
E21D
主分类号
E21D
代理机构
代理人
主权项
地址
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