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公开(公告)号：US3522764A
公开(公告)日：1970-08-04
申请号：US3522764D
申请日：1968-03-25
Applicant: POLAROID CORP
Inventor： BIBER CONRAD H , POPE WILLIAM R JR
CPC classification number: G02B7/40 , G01S15/101
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