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公开(公告)号：US3187705A
公开(公告)日：1965-06-08
申请号：US26829063
申请日：1963-03-27
Applicant: GEN MOTORS CORP
Inventor： COSTELLO ROBERT B , PERSELL BURTON E
IPC: B63B21/26
CPC classification number: B63B21/26
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