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发明名称
Impact drill
摘要
申请公布号
US2742264(A)
申请公布日期
1956.04.17
申请号
US19510236936
申请日期
1951.07.16
申请人
SUYDER ROBERT E
发明人
SUYDER ROBERT E.
分类号
E21B4/10
主分类号
E21B4/10
代理机构
代理人
主权项
地址
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