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发明名称
Stoper feed control
摘要
申请公布号
US1850565(A)
申请公布日期
1932.03.22
申请号
US19260097870
申请日期
1926.03.27
申请人
CHICAGO PNEUMATIC TOOL COMPANY
发明人
O'FARRELL MATTHEW
分类号
E21B19/086
主分类号
E21B19/086
代理机构
代理人
主权项
地址
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