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Priority to JP1987071650UpriorityCriticalpatent/JPH0537790Y2/ja
Priority to DE19883800751prioritypatent/DE3800751A1/de
Priority to CA000556402Aprioritypatent/CA1324313C/en
Priority to NL8800112Aprioritypatent/NL188735C/xx
Publication of JPS63179848UpublicationCriticalpatent/JPS63179848U/ja
Application grantedgrantedCritical
Publication of JPH0537790Y2publicationCriticalpatent/JPH0537790Y2/ja
