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Priority to JP1988061049UpriorityCriticalpatent/JPH0412361Y2/ja
Priority to US07/344,722prioritypatent/US4878836A/en
Priority to EP89108263Aprioritypatent/EP0341641A3/en
Priority to CA000599332Aprioritypatent/CA1294450C/en
Publication of JPH01170858UpublicationCriticalpatent/JPH01170858U/ja
Application grantedgrantedCritical
Publication of JPH0412361Y2publicationCriticalpatent/JPH0412361Y2/ja
