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发明名称
Mine prop prestressing device
摘要
申请公布号
GB2302913(A)
申请公布日期
1997.02.05
申请号
GB19960001048
申请日期
1996.01.18
申请人
* HL & H TIMBER PRODUCTS
发明人
GRAHAM HEATH * CLARKE
分类号
E21D15/30;E21D15/51;(IPC1-7):E21D15/44
主分类号
E21D15/30
代理机构
代理人
主权项
地址
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