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经营范围
发明名称
Control system for hydraulic mine roof support
摘要
申请公布号
GB2214988(A)
申请公布日期
1989.09.13
申请号
GB19880003352
申请日期
1988.02.13
申请人
* GULLICK DOBSON LIMITED
发明人
REGINALD ANDREW * PHILLIPS;ANDREW GEORGE * HALL
分类号
E21D23/26
主分类号
E21D23/26
代理机构
代理人
主权项
地址
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