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经营范围
发明名称
Longwall Mining Machines
摘要
申请公布号
GB1160681(A)
申请公布日期
1969.08.06
申请号
GB19650032670
申请日期
1965.07.30
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
ARTHUR HARRY MORRIS;ROBERT ALAN HAWKSWORTH;HARRY ROBERTS
分类号
E21C27/02
主分类号
E21C27/02
代理机构
代理人
主权项
地址
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