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发明名称
Lubrication of bearings
摘要
申请公布号
US2906504(A)
申请公布日期
1959.09.29
申请号
US19580753800
申请日期
1958.08.07
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
PARKS MERCER H.
分类号
E21B10/24
主分类号
E21B10/24
代理机构
代理人
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