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公开(公告)号：US3199980A
公开(公告)日：1965-08-10
申请号：US22015762
申请日：1962-08-29
Applicant: NAT RES DEV
Inventor： HAROLD BROOKS , GEORGE BROWN ANTHONY REGINALD , STANLEY JEPSON KENNETH , IVOR LEWIS GERALD
IPC: C22C14/00
CPC classification number: C22C14/00
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