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1.发明授权
公开(公告)号：US2121151A
公开(公告)日：1938-06-21
申请号：US72350534
申请日：1934-05-02
Applicant: STANDARD OIL DEV CO
Inventor： KARNS CHARLES B
IPC: C10M135/02
CPC classification number: C10M135/02 , C10M2201/043 , C10M2203/10 , C10M2203/102 , C10M2203/104 , C10M2203/106 , C10M2203/108 , C10M2207/125 , C10M2207/129 , C10M2219/00 , C10M2219/022 , C10M2219/024 , C10N2210/00 , C10N2210/04
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