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公开(公告)号：US2771371A
公开(公告)日：1956-11-20
申请号：US31114252
申请日：1952-09-23
Applicant: STANDARD OIL CO
Inventor： DIEMAN EDGAR A , RAVENSCROFT PHILIP H
IPC: C23F11/10
CPC classification number: C23F11/10
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