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公开(公告)号：US2907644A
公开(公告)日：1959-10-06
申请号：US47314954
申请日：1954-12-06
Applicant: STANDARD OIL CO CALIFORNIA
Inventor： CUNNINGHAM JOHN R , MILTON LUDWIG
IPC: B01J19/24
CPC classification number: B01J19/2425 , B01J2219/00085 , B01J2219/00164
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