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Priority to JP2068288UpriorityCriticalpatent/JPH0346984Y2/ja
Priority to CA000591340Aprioritypatent/CA1339153C/en
Priority to CA000608346Aprioritypatent/CA1340164C/en
Publication of JPH01125239UpublicationCriticalpatent/JPH01125239U/ja
Priority to US07/507,357prioritypatent/US5111182A/en
Application grantedgrantedCritical
Publication of JPH0346984Y2publicationCriticalpatent/JPH0346984Y2/ja