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Application filedfiledCritical
Priority to JP1988061051UpriorityCriticalpatent/JPH0412363Y2/ja
Priority to US07/344,722prioritypatent/US4878836A/en
Priority to EP89108263Aprioritypatent/EP0341641A3/en
Priority to CA000599332Aprioritypatent/CA1294450C/en
Publication of JPH01170860UpublicationCriticalpatent/JPH01170860U/ja
Application grantedgrantedCritical
Publication of JPH0412363Y2publicationCriticalpatent/JPH0412363Y2/ja
