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公开(公告)号：US3098710A
公开(公告)日：1963-07-23
申请号：US82749859
申请日：1959-07-16
Applicant: STORA KOPPARBERGS BERGSLAGS AB
Inventor： AHLBORG NILS KNUT G , CEDERQUIST KARL N
IPC: C01D5/14
CPC classification number: C01D5/14 , Y10S423/03
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