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发明名称
MINE SAFETY
摘要
申请公布号
ZA201203759(B)
申请公布日期
2013.01.30
申请号
ZA20120003759
申请日期
2012.05.23
申请人
NICAUD CAMPANIES 22 (PROPRIETARY) LIMITED
发明人
FLANAGAN FREDERICK WILLIAM;VERGOTTINI WILLIAM WALKER
分类号
E21D;E21F
主分类号
E21D
代理机构
代理人
主权项
地址
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