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发明名称
Stabilisation of viscous petroleum oils
摘要
申请公布号
GB552123(A)
申请公布日期
1943.03.24
申请号
GB19410012034
申请日期
1941.09.19
申请人
E.I. DU PONT DE NEMOURS AND CO.
发明人
分类号
主分类号
代理机构
代理人
主权项
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