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公开(公告)号:US3198676A
公开(公告)日:1965-08-03
申请号:US39910764
申请日:1964-09-24
Applicant: ALUMINUM CO OF AMERICA
Inventor: SPROWLS DONALD O , NOCK JR JOSEPH A
公开(公告)号:US3198676A
公开(公告)日:1965-08-03
申请号:US39910764
申请日:1964-09-24
Applicant: ALUMINUM CO OF AMERICA
Inventor: SPROWLS DONALD O , NOCK JR JOSEPH A