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公开(公告)号：US2856342A
公开(公告)日：1958-10-14
申请号：US46756454
申请日：1954-11-08
Applicant: SHELL DEV
Inventor： DER HOEVEN HENDRIK WILLEM VAN , MARINUS OUDEMAN
IPC: C23F13/02
CPC classification number: C23F13/10 , C23F2213/31 , C23F2213/32
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