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发明名称
DEVICE FOR RESTRAINING MOVEMENT OF THE HAULAGE CHAIN OF A COAL CUTTING MACHINE
摘要
申请公布号
GB1292486(A)
申请公布日期
1972.10.11
申请号
GB19700020571
申请日期
1970.04.29
申请人
PERARD ENGINEERING LIMITED
发明人
TERENCE HUBBARD
分类号
E21C29/10
主分类号
E21C29/10
代理机构
代理人
主权项
地址
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