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发明名称
Rock drill
摘要
申请公布号
US1884652(A)
申请公布日期
1932.10.25
申请号
US19290377273
申请日期
1929.07.10
申请人
SULLIVAN MACHINERY COMPANY
发明人
GARTIN ELMER G.
分类号
B25D9/18
主分类号
B25D9/18
代理机构
代理人
主权项
地址
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