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发明名称
MINE ROOF BOLT
摘要
申请公布号
AU569701(B2)
申请公布日期
1988.02.18
申请号
AU19830011946
申请日期
1983.03.01
申请人
OULSNAM, B.T.,
发明人
BRYON THOMAS OULSNAM
分类号
E21D20/02;E21D21/00;(IPC1-7):E21D20/00
主分类号
E21D20/02
代理机构
代理人
主权项
地址
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