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Priority to JP10188888UpriorityCriticalpatent/JPH0222270U/ja
Priority to US07/385,894prioritypatent/US4956540A/en
Priority to CA000606990Aprioritypatent/CA1323400C/en
Priority to EP89307716Aprioritypatent/EP0353098B1/en
Priority to DE8989307716Tprioritypatent/DE68905004T2/de
Publication of JPH0222270UpublicationCriticalpatent/JPH0222270U/ja