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Priority to ES0262596ApriorityCriticalpatent/ES262596A3/en
Publication of ES262596A3publicationCriticalpatent/ES262596A3/en
Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices
(AREA)
Abstract
Manual device for sharpening pencil mines, comprising a hollow casing, equipped at the top with a draft through which a tubular piece penetrates and remains suspended, in which the pencil is inserted, whose graphite tip is sharpened; and a frustoconical tubular piece in whose internal face, granularly constituted, the sharpening of the graphite tip of the pen is performed by fraction. (Machine-translation by Google Translate, not legally binding)
ES0262596A1960-11-191960-11-19Manual device for sharpening mines of lapicero (Machine-translation by Google Translate, not legally binding)
ExpiredES262596A3
(en)