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Priority to JP7958689UpriorityCriticalpatent/JPH0321066U/ja
Priority to US07/493,960prioritypatent/US5118958A/en
Priority to IT47767Aprioritypatent/IT1240802B/it
Priority to DE4008795Aprioritypatent/DE4008795C2/de
Publication of JPH0321066UpublicationCriticalpatent/JPH0321066U/ja