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发明名称
Chuck mechanism for rock drills
摘要
申请公布号
US2138944(A)
申请公布日期
1938.12.06
申请号
US19370163444
申请日期
1937.09.11
申请人
INGERSOLL-RAND COMPANY
发明人
SLATER FRED M.
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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