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经营范围
发明名称
COWL DEVICE FOR MINING MACHINERY
摘要
申请公布号
GB8821914(D0)
申请公布日期
1988.10.19
申请号
GB19880021914
申请日期
1988.09.05
申请人
GREEN & BINGHAM LTD
发明人
分类号
E21C25/14
主分类号
E21C25/14
代理机构
代理人
主权项
地址
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