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Priority claimed from JP11778390Uexternal-prioritypatent/JPH081029Y2/ja
Application filed by Hitachi Shipbuilding Eng CofiledCriticalHitachi Shipbuilding Eng Co
Publication of ITTO910861A0publicationCriticalpatent/ITTO910861A0/it
Publication of ITTO910861A1publicationCriticalpatent/ITTO910861A1/it
Application grantedgrantedCritical
Publication of IT1250047BpublicationCriticalpatent/IT1250047B/it