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发明名称
ROCK BIT WITH BEARING LUBRICANT RESERVOIR
摘要
申请公布号
AU8514282(A)
申请公布日期
1983.02.03
申请号
AU19820085142
申请日期
1982.06.23
申请人
DRESSER INDUSTRIES, INC.
发明人
DENNIS DEWAYNE FULLER
分类号
E21B10/22;E21B10/24
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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