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发明名称
A quarrying process and apparatus
摘要
申请公布号
IE930538(A1)
申请公布日期
1995.01.25
申请号
IE19930000538
申请日期
1993.07.19
申请人
B B FABRICATIONS LIMITED,
发明人
PATRICK HEALY;DONAL HEALY
分类号
E21C41/26;E21C50/00;(IPC1-7):E21C47/10
主分类号
E21C41/26
代理机构
代理人
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地址
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