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公开(公告)号：US2686855A
公开(公告)日：1954-08-17
申请号：US28540452
申请日：1952-05-01
Applicant: GEN MOTORS CORP
Inventor： CHESTER ROBERT W , HARNETT ROBERT T , ROYER DARRELL E , SMITH JOHN H
CPC classification number: H01H50/22 , H01H51/082
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