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发明名称
PICK HOLDING ARRANGEMENTS
摘要
申请公布号
GB8306641(D0)
申请公布日期
1983.04.13
申请号
GB19830006641
申请日期
1983.03.10
申请人
WIMET MINING LTD
发明人
分类号
E21C35/197;(IPC1-7):E21C35/18
主分类号
E21C35/197
代理机构
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