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发明名称
Thrust mechanism for advancing coal extracting machinery towards a coal face
摘要
申请公布号
GB871971(A)
申请公布日期
1961.07.05
申请号
GB19580028100
申请日期
1958.09.02
申请人
A. G. WILD & COMPANY LIMITED
发明人
HISTON ROBERT
分类号
E21C35/14
主分类号
E21C35/14
代理机构
代理人
主权项
地址
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