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Priority to JP1989105965UpriorityCriticalpatent/JPH0737403Y2/ja
Priority to DE69030796Tprioritypatent/DE69030796T2/de
Priority to EP90117125Aprioritypatent/EP0416596B1/en
Priority to US07/577,743prioritypatent/US5138463A/en
Priority to CA002024802Aprioritypatent/CA2024802C/en
Publication of JPH0344970UpublicationCriticalpatent/JPH0344970U/ja
Application grantedgrantedCritical
Publication of JPH0737403Y2publicationCriticalpatent/JPH0737403Y2/ja