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发明名称
HARD BANDING OF DRILL PIPE
摘要
申请公布号
GB1510709(A)
申请公布日期
1978.05.17
申请号
GB19750024196
申请日期
1976.04.27
申请人
OFFSHORE DRILLING SUPPLIES LTD
发明人
分类号
B23K31/02;B23K35/32;(IPC1-7):B23K9/04;B23K9/16
主分类号
B23K31/02
代理机构
代理人
主权项
地址
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