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Priority to JP12709090UpriorityCriticalpatent/JPH0484251U/ja
Priority to US07/799,051prioritypatent/US5267701A/en
Priority to ITRM910904Aprioritypatent/IT1251455B/it
Priority to DE4139442Aprioritypatent/DE4139442A1/de
Publication of JPH0484251UpublicationCriticalpatent/JPH0484251U/ja