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Priority to JP1988085994UpriorityCriticalpatent/JPH0725729Y2/ja
Priority to US07/373,170prioritypatent/US5157245A/en
Priority to DE3921420Aprioritypatent/DE3921420A1/de
Publication of JPH027584UpublicationCriticalpatent/JPH027584U/ja
Application grantedgrantedCritical
Publication of JPH0725729Y2publicationCriticalpatent/JPH0725729Y2/ja