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公开(公告)号：US3267807A
公开(公告)日：1966-08-23
申请号：US35137264
申请日：1964-03-12
Applicant: AMERICAN OPTICAL CORP
Inventor： SWOPE CHARLES H , KOESTER CHARLES J
CPC classification number: A61F9/022 , G01J2001/0285
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