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发明名称
MASONRY DRILL BIT DUST COLLECTOR
摘要
申请公布号
GB8701590(D0)
申请公布日期
1987.02.25
申请号
GB19870001590
申请日期
1987.01.24
申请人
WARD, A D
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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