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发明名称
ROLLER BIT BEARING
摘要
申请公布号
SU1198183(A1)
申请公布日期
1985.12.15
申请号
SU19843683732
申请日期
1984.01.02
申请人
SP K BYURO PO DOLOTAM
发明人
TORGASHOV ALEKSANDR V,SU;TUMANOV YURIJ A,SU;POROSENKOV ALEKSANDR P,SU;MOKROUSOV VYACHESLAV P,SU
分类号
E21B10/22;(IPC1-7):E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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