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公开(公告)号：US3142333A
公开(公告)日：1964-07-28
申请号：US15899261
申请日：1961-12-13
Applicant: INTERNAT MACGREGOR ORGANIZATIO
Inventor： HENRI KUMMERMAN , MARIE PROUST GEORGES JULES
IPC: B63B19/21
CPC classification number: B63B19/21
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