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发明名称
Wagon drill
摘要
申请公布号
US2820612(A)
申请公布日期
1958.01.21
申请号
US19540403339
申请日期
1954.01.11
申请人
THOR POWER TOOL COMPANY
发明人
FUEHRER GEORGE H.
分类号
E21B7/02
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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