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经营范围
发明名称
Tie-rod for use in maintaining pit roof and side supporting arches in spaced relationship
摘要
申请公布号
GB1003553(A)
申请公布日期
1965.09.08
申请号
GB19610025722
申请日期
1961.07.15
申请人
THE LANARKSHIRE STEEL COMPANY LIMITED
发明人
WILSON WILLIAM
分类号
E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
地址
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