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公开(公告)号：US2669505A
公开(公告)日：1954-02-16
申请号：US6610648
申请日：1948-12-18
Applicant: STANDARD OIL DEV CO
Inventor： RHYS JR CYRIL O , STANTON WILLIAM E
IPC: B01D11/04
CPC classification number: B01D11/04
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