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公开(公告)号：US2218993A
公开(公告)日：1940-10-22
申请号：US18171637
申请日：1937-12-24
Applicant: STANDARD OIL DEV CO
Inventor： RUPP WALTER H , MATEER GEORGE L , MOORE THOMAS W
IPC: B01D3/16
CPC classification number: B01D3/163 , Y10S203/19
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