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经营范围
发明名称
HYDRAULICALLY MINING FRIABLE CARBONACEOUS MATERIAL
摘要
申请公布号
GB1526739(A)
申请公布日期
1978.09.27
申请号
GB19750043364
申请日期
1975.10.22
申请人
KAISER RESOURCES LTD
发明人
分类号
E21C25/60;E21C35/20;E21C45/00;E21F13/00;E21F13/04;(IPC1-7):E21C25/60
主分类号
E21C25/60
代理机构
代理人
主权项
地址
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