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发明名称
SEALING ARRANGEMENT FOR ROTARY BIT BEARINGS
摘要
申请公布号
SU1094943(A1)
申请公布日期
1984.05.30
申请号
SU19823424793
申请日期
1982.04.15
申请人
VNI PK I GORNORUDNOGO MASHINOSTROENIYA
发明人
MAKASHOV LEONID N,SU;TIKHONOV ANATOLIJ I,SU;POLUDNENKO YURIJ Z,SU
分类号
E21B10/00;(IPC1-7):E21B10/00
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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