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Priority to JP2873289UpriorityCriticalpatent/JPH0623817Y2/ja
Priority to US07/394,568prioritypatent/US5052720A/en
Priority to EP89308424Aprioritypatent/EP0359415A1/en
Publication of JPH02119591UpublicationCriticalpatent/JPH02119591U/ja
Application grantedgrantedCritical
Publication of JPH0623817Y2publicationCriticalpatent/JPH0623817Y2/ja