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公开(公告)号：US2829002A
公开(公告)日：1958-04-01
申请号：US53452255
申请日：1955-09-15
Applicant: GEN MOTORS CORP
Inventor： LEAVENGOOD ERNEST A , SEVERANCE DONALD W
IPC: B60N2/02
CPC classification number: B60N2/0224 , B60N2002/0256
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