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公开(公告)号：US3084694A
公开(公告)日：1963-04-09
申请号：US1835560
申请日：1960-03-29
Applicant: AMERICAN OPTICAL CORP
Inventor： KAVANAGH ARTHUR J , PADYKULA FRANK J
IPC: A61F9/008
CPC classification number: A61F9/00821 , A61F9/008 , A61F2009/00863
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