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公开(公告)号：US3319456A
公开(公告)日：1967-05-16
申请号：US34338964
申请日：1964-02-07
Applicant: GEN ELECTRIC
Inventor： SPEROS DIMITRIOS M , WOODHOUSE ROBERT L
IPC: G01N25/48
CPC classification number: G01N25/4866
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