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Priority to JP1988034304UpriorityCriticalpatent/JPH067136Y2/ja
Priority to US07/290,150prioritypatent/US4956950A/en
Priority to DE8989101805Tprioritypatent/DE68900342D1/de
Priority to EP89101805Aprioritypatent/EP0327969B1/en
Publication of JPH01138039UpublicationCriticalpatent/JPH01138039U/ja
Application grantedgrantedCritical
Publication of JPH067136Y2publicationCriticalpatent/JPH067136Y2/ja