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公开(公告)号：US3261703A
公开(公告)日：1966-07-19
申请号：US24153662
申请日：1962-12-03
Applicant: ALUMINUM CO OF AMERICA
Inventor： HART LEROY D , GRAEBE WILLIAM F
IPC: C04B33/13
CPC classification number: C04B33/1305 , C04B33/13
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