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公开(公告)号：US2652517A
公开(公告)日：1953-09-15
申请号：US18730650
申请日：1950-09-28
Applicant: GEN MOTORS CORP
Inventor： DEGRIFT THOMAS C VAN , GADD CHARLES W , MATSEN RALPH S
IPC: G01L23/18
CPC classification number: G01L23/18
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