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公开(公告)号：US2929591A
公开(公告)日：1960-03-22
申请号：US62567756
申请日：1956-12-03
Applicant: GEN MOTORS CORP
Inventor： ETCHELLS EUGENE B , EDWARD GRAY
IPC: F16F15/067
CPC classification number: F16F15/067
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