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公开(公告)号：US2770772A
公开(公告)日：1956-11-13
申请号：US36980653
申请日：1953-07-23
Applicant: INT STANDARD ELECTRIC CORP
Inventor： HENRY FOULKES CHRISTOPHER , JAMES BLYTHE ERNEST
IPC: G01M3/20
CPC classification number: G01M3/20
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