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Priority to JP1988152386UpriorityCriticalpatent/JPH0273971U/ja
Priority to KR2019890012068Uprioritypatent/KR920000108Y1/ko
Priority to IT02246489Aprioritypatent/IT1280343B1/it
Publication of JPH0273971UpublicationCriticalpatent/JPH0273971U/ja