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经营范围
发明名称
Improvements in and relating to a hydraulic control system
摘要
申请公布号
GB9719967(D0)
申请公布日期
1997.11.19
申请号
GB19970019967
申请日期
1997.09.20
申请人
JOY MINING MACHINERY LIMITED
发明人
分类号
E21D23/16;E21D23/26
主分类号
E21D23/16
代理机构
代理人
主权项
地址
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