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经营范围
发明名称
Improvements in feed legs for drilling apparatus
摘要
申请公布号
GB783475(A)
申请公布日期
1957.09.25
申请号
GB19550024585
申请日期
1955.08.26
申请人
CHICAGO PNEUMATIC TOOL COMPANY
发明人
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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