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Priority to JP1987005639UpriorityCriticalpatent/JPH0417Y2/ja
Priority to CA000556338Aprioritypatent/CA1312184C/en
Priority to EP88300422Aprioritypatent/EP0276128A3/en
Publication of JPS63115019UpublicationCriticalpatent/JPS63115019U/ja
Priority to US07/630,810prioritypatent/US5218036A/en
Application grantedgrantedCritical
Publication of JPH0417Y2publicationCriticalpatent/JPH0417Y2/ja