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发明名称
MINE ROOFBOLTS
摘要
申请公布号
GB9000870(D0)
申请公布日期
1990.03.14
申请号
GB19900000870
申请日期
1990.01.15
申请人
STOKES, MAURICE R
发明人
分类号
B21K1/46;B21K25/00;E21D21/00;F16B11/00;F16B17/00;F16B35/00
主分类号
B21K1/46
代理机构
代理人
主权项
地址
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