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发明名称
Spall reducing masonary drill bit (for brick)
摘要
申请公布号
GB201119615(D0)
申请公布日期
2011.12.28
申请号
GB20110019615
申请日期
2011.11.12
申请人
PRIDGEON, STEPHEN J
发明人
分类号
主分类号
代理机构
代理人
主权项
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