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Priority to JP1989055042UpriorityCriticalpatent/JPH0649244Y2/ja
Priority to EP19890110478prioritypatent/EP0345806A3/en
Publication of JPH02145152UpublicationCriticalpatent/JPH02145152U/ja
Priority to US07/898,399prioritypatent/US5176424A/en
Application grantedgrantedCritical
Publication of JPH0649244Y2publicationCriticalpatent/JPH0649244Y2/ja