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经营范围
发明名称
DRILL BIT STOP
摘要
申请公布号
CA900223(A)
申请公布日期
1972.05.16
申请号
CAD900223
申请日期
申请人
CENTURY DRILL AND TOOL COMPANY
发明人
GEORGE M. BROWN
分类号
B23B47/00;B23B49/00;(IPC1-7):B23B47/00
主分类号
B23B47/00
代理机构
代理人
主权项
地址
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