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公开(公告)号：US2081176A
公开(公告)日：1937-05-25
申请号：US70478633
申请日：1933-12-30
Applicant: STANDARD OIL DEV CO
Inventor： HEWLETT AMIOT P , COLE CHARLES H
IPC: C10L1/16
CPC classification number: C10L1/1616
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