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Priority to JP8224489UpriorityCriticalpatent/JPH0322376U/ja
Priority to US07/548,532prioritypatent/US5145433A/en
Priority to CA002020588Aprioritypatent/CA2020588C/en
Priority to EP90113181Aprioritypatent/EP0407986B1/en
Priority to DE69033410Tprioritypatent/DE69033410T2/de
Publication of JPH0322376UpublicationCriticalpatent/JPH0322376U/ja