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发明名称
Slide bar brackets for use with mine roof supports
摘要
申请公布号
GB1147065(A)
申请公布日期
1969.04.02
申请号
GB19650036301
申请日期
1965.08.24
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
CLARKE EDWARD BRYAN
分类号
E21D17/03
主分类号
E21D17/03
代理机构
代理人
主权项
地址
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