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发明名称
PLATE-TYPE DAMPER OF DRILL STRING OSCILLATIONS
摘要
申请公布号
SU1273494(A1)
申请公布日期
1986.11.30
申请号
SU19853914923
申请日期
1985.06.25
申请人
SEVERO-KAVKAZSKOGO GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
BOSENKO ANATOLIJ A,SU;SLYUSSAR EDUARD I,SU
分类号
E21B17/07
主分类号
E21B17/07
代理机构
代理人
主权项
地址
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