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公开(公告)号：US2804155A
公开(公告)日：1957-08-27
申请号：US30646452
申请日：1952-07-31
Applicant: GEN MOTORS CORP
Inventor： BLANCHARD WERNER J , HAINES JOHN F , MARTIN THOMAS B , MACNEIL ELSIE M
IPC: B64C11/40
CPC classification number: B64C11/40
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