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发明名称
Lubricating oil
摘要
申请公布号
US2138771(A)
申请公布日期
1938.11.29
申请号
US19340732092
申请日期
1934.06.23
申请人
THE TEXAS COMPANY
发明人
PEVERE ERNEST F.
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主分类号
代理机构
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