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经营范围
发明名称
Mounting of cutters on cutting tools
摘要
申请公布号
GB2084219(A)
申请公布日期
1982.04.07
申请号
GB19800030944
申请日期
1980.09.25
申请人
NL INDUSTRIES INC
发明人
分类号
E21B10/56;E21B10/567;E21B10/573;(IPC1-7):E21B10/46
主分类号
E21B10/56
代理机构
代理人
主权项
地址
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