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公开(公告)号：US2110267A
公开(公告)日：1938-03-08
申请号：US69259033
申请日：1933-10-07
Applicant: STANDARD OIL DEV CO
Inventor： HARRINGTON PAUL J , BURKS JR HARRY G
IPC: C01B17/58
CPC classification number: C01B17/58
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