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公开(公告)号：US3547542A
公开(公告)日：1970-12-15
申请号：US3547542D
申请日：1968-03-01
Applicant: TRW INC
Inventor： BULPITT THOMAS H , FLADLIEN DAVID G
CPC classification number: G01J3/2889 , H04N5/33
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