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发明名称
Improved support for mine roadways
摘要
申请公布号
GB901070(A)
申请公布日期
1962.07.11
申请号
GB19600015020
申请日期
1960.04.28
申请人
THE EXPANDED METAL COMPANY LIMITED
发明人
FLIGHT EDGAR JOHN
分类号
E21D11/15;E21D11/24
主分类号
E21D11/15
代理机构
代理人
主权项
地址
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