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发明名称
Rock drill mounting
摘要
申请公布号
US2062991(A)
申请公布日期
1936.12.01
申请号
US19330662125
申请日期
1933.03.22
申请人
SULLIVAN MACHINERY COMPANY
发明人
GARTIN ELMER G.
分类号
E21B19/08
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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