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经营范围
发明名称
Lubricating oil
摘要
申请公布号
US1942636(A)
申请公布日期
1934.01.09
申请号
US19280294935
申请日期
1928.07.23
申请人
MID-CONTINENT PETROLEUM CORPORATION
发明人
BENNETT HARRY T.;STORY LE ROY G.
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