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发明名称
Rock drill
摘要
申请公布号
US2128934(A)
申请公布日期
1938.09.06
申请号
US19340737795
申请日期
1934.07.31
申请人
SULLIVAN MACHINERY COMPANY
发明人
GARTIN ELMER G.
分类号
B25D17/08
主分类号
B25D17/08
代理机构
代理人
主权项
地址
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