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经营范围
发明名称
MINING EQUIPMENT
摘要
申请公布号
ZA8909497(B)
申请公布日期
1990.10.31
申请号
ZA19890009497
申请日期
1989.12.13
申请人
E.C. LENNING LIMITED
发明人
DAVID JACKSON WATT;MICHAEL JULIUS PARKER
分类号
E21C;E21F
主分类号
E21C
代理机构
代理人
主权项
地址
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