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Priority to JP7822589UpriorityCriticalpatent/JPH0318066U/ja
Priority to IT47772Aprioritypatent/IT1239763B/it
Priority to DE4008921Aprioritypatent/DE4008921C2/de
Publication of JPH0318066UpublicationCriticalpatent/JPH0318066U/ja
Priority to US07/849,811prioritypatent/US5279729A/en