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发明名称
IMPROVEMENTS IN/RELATING TO MANUFACTURE OF ROTARY DRILL BITS
摘要
申请公布号
GB8824166(D0)
申请公布日期
1988.11.23
申请号
GB19880024166
申请日期
1988.10.14
申请人
REED TOOL CO LTD
发明人
分类号
B23K31/02;B23P11/00;E21B10/56;E21B10/567;E21B10/62;F16B11/00
主分类号
B23K31/02
代理机构
代理人
主权项
地址
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