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Priority to JP12865779UpriorityCriticalpatent/JPS5646809U/ja
Priority to US06/186,621prioritypatent/US4378109A/en
Priority to EP80105583Aprioritypatent/EP0025976B1/en
Priority to DE8080105583Tprioritypatent/DE3068119D1/de
Publication of JPS5646809UpublicationCriticalpatent/JPS5646809U/ja