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经营范围
发明名称
Improvements in and relating to the mining or winning of coal or other material
摘要
申请公布号
GB648353(A)
申请公布日期
1951.01.03
申请号
GB19480004140
申请日期
1948.02.12
申请人
HUWOOD MINING MACHINERY LIMITED;FEATHERSTONE BAINBRIDGE
发明人
分类号
E21C35/12
主分类号
E21C35/12
代理机构
代理人
主权项
地址
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