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公开(公告)号：US3312535A
公开(公告)日：1967-04-04
申请号：US29551763
申请日：1963-07-16
Applicant: ALUMINUM CO OF AMERICA
Inventor： ANDERSON WILLIAM A , RONALD ANDREW
CPC classification number: C22C21/00 , G02B5/08 , Y10S75/95 , Y10S428/926 , Y10S428/927 , Y10S428/935 , Y10S428/936 , Y10T428/1259 , Y10T428/12736 , Y10T428/12993
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