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公开(公告)号：US2795535A
公开(公告)日：1957-06-11
申请号：US32879852
申请日：1952-12-30
Applicant: PURE OIL CO
Inventor： CROSBY GIFFORD W , HOLM LE ROY W , MORRISON ROBERT W , SANDNER WALTER J
IPC: C10G71/00
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