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发明名称
DRILLING PIPE MADE OF LIGHT ALLOY WITH PROTECTIVE THICKENING
摘要
申请公布号
SU651112(A1)
申请公布日期
1979.03.05
申请号
SU19762362859
申请日期
1976.05.24
申请人
VNII RAZRABOTKI EKSPLUATATSII NEFTEPROMYSLOVYKH TRUB
发明人
SNAREV ANATOLIJ ,SU;FAJN GENRIKH M,SU;YALYMOV VALENTIN M,SU;AJZUPPE ELMIR A,SU;KAGAN LAZAR S,SU;SHEINA ANTONINA A,SU
分类号
E21B17/00;(IPC1-7):E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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