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Priority to JP8202779UpriorityCriticalpatent/JPS5919291Y2/ja
Priority to EP80400845Aprioritypatent/EP0021951A1/fr
Publication of JPS5634UpublicationCriticalpatent/JPS5634U/ja
Application grantedgrantedCritical
Publication of JPS5919291Y2publicationCriticalpatent/JPS5919291Y2/ja