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公开(公告)号：US3322940A
公开(公告)日：1967-05-30
申请号：US24981063
申请日：1963-01-07
Applicant: LAB FOR ELECTRONICS INC
Inventor： BARKER JOHN L , HANNULA FRED W , PALLAT LUDWIG R
CPC classification number: G08G1/0104 , G08G1/01
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