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发明名称
IMPROVED METHOD FOR STEERING A MINING MACHINE CUTTER
摘要
申请公布号
GB8829975(D0)
申请公布日期
1989.02.15
申请号
GB19880029975
申请日期
1988.12.22
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
分类号
E21C35/24
主分类号
E21C35/24
代理机构
代理人
主权项
地址
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