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经营范围
发明名称
MINING SUPPORT PILLAR
摘要
申请公布号
ZA8404219(B)
申请公布日期
1986.02.26
申请号
ZA19840004219
申请日期
1984.06.05
申请人
APPL. SUBSTITUTED STRATAFIX (PTY) LTD.
发明人
JOHN ANECK HAHN;LEON DISON
分类号
E21C;E21D;E21F
主分类号
E21C
代理机构
代理人
主权项
地址
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