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发明名称
Locking device for tool retainers
摘要
申请公布号
US1811389(A)
申请公布日期
1931.06.23
申请号
US19290372692
申请日期
1929.06.21
申请人
THE CLEVELAND ROCK DRILL COMPANY
发明人
HAFFORD DANIEL J.
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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