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公开(公告)号：US3047955A
公开(公告)日：1962-08-07
申请号：US4950460
申请日：1960-08-15
Applicant: CAVITRON ULTRASONICS INC
Inventor： LEWIS BALAMUTH , CLAUS KLEESATTEL
IPC: G01B5/20
CPC classification number: G01B5/20
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