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发明名称
Method of and apparatus for installing a mine prop
摘要
申请公布号
ZA9309581(B)
申请公布日期
1994.08.11
申请号
ZA19930009581
申请日期
1993.12.20
申请人
ALPHA MINING AND TECHNICAL SERVICES (BOPHUTHATSWANA) (PROPRIETARY) LIMITED.
发明人
MATTHYS DANIEL HENZEN;FREDERICK WILLIAM FLANAGAN
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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