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公开(公告)号：US2652317A
公开(公告)日：1953-09-15
申请号：US8492449
申请日：1949-04-01
Applicant: STANDARD OIL DEV CO
Inventor： REES KENNETH A , INNES JR THEODORE J , WILLIAMS LEONARD M , WILLIAMS ROBERT W
IPC: B01J8/44
CPC classification number: B01J8/44
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