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发明名称
METHOD OF OBTAINING A SERVICE LIFE EXTENDING ADDITIVE TO MINERAL OILS
摘要
申请公布号
PL143584(B1)
申请公布日期
1988.02.29
申请号
PL19840250959
申请日期
1984.12.14
申请人
发明人
分类号
C07F;C10M;C10M137/16;(IPC1-7):C10M137/16
主分类号
C07F
代理机构
代理人
主权项
地址
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