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发明名称
DRILL ROD
摘要
申请公布号
JPS6179725(A)
申请公布日期
1986.04.23
申请号
JP19850200689
申请日期
1985.09.12
申请人
SAIPEM SPA
发明人
NIKORANJIERO SHINIYOORI
分类号
E21B17/00;C21D1/09;C21D9/00;C21D9/14;C21D9/22
主分类号
E21B17/00
代理机构
代理人
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地址
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