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公开(公告)号：US3029489A
公开(公告)日：1962-04-17
申请号：US84494159
申请日：1959-10-07
Applicant: BUDD CO
Inventor： NELSON ANDREW F
IPC: G01B5/30
CPC classification number: G01B5/30 , Y10S411/947 , Y10T24/44265 , Y10T408/21 , Y10T408/5633
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