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发明名称
SEAL SWIVEL
摘要
申请公布号
SU1218063(A1)
申请公布日期
1986.03.15
申请号
SU19843782382
申请日期
1984.08.20
申请人
PROIZV OB "UZBEKGIDROGEOLOGIYA"
发明人
ISMAILOV MURAT I,SU;KHARCHENKO ALEKSANDR E,SU
分类号
E21B21/02;(IPC1-7):E21B21/02
主分类号
E21B21/02
代理机构
代理人
主权项
地址
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