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公开(公告)号：US2877929A
公开(公告)日：1959-03-17
申请号：US58960656
申请日：1956-06-06
Applicant: INDIANA STEEL PRODUCTS CO
Inventor： IRELAND JAMES R
IPC: B01J4/02
CPC classification number: B01J4/02 , Y10T137/85954
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