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公开(公告)号：US2731257A
公开(公告)日：1956-01-17
申请号：US31870152
申请日：1952-11-04
Applicant: GEN MOTORS CORP
Inventor： HANSEN KAI H
CPC classification number: B60G7/04 , B60G11/16 , B60G11/50 , B60G15/06 , B60G2204/1244
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