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公开(公告)号：US2782099A
公开(公告)日：1957-02-19
申请号：US41027254
申请日：1954-02-15
Applicant: FMC CORP
Inventor： HAINES GEORGE S , HEINDEL FRANK D , MEEKER CHESTER C
IPC: C01F11/10
CPC classification number: C01F11/10
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