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Priority to ES0085574UpriorityCriticalpatent/ES85574Y/en
Publication of ES85574UpublicationCriticalpatent/ES85574U/en
Application grantedgrantedCritical
Publication of ES85574YpublicationCriticalpatent/ES85574Y/en
Replacement for writing devices of ball pattern, which is essentially constituted by a tube that constitutes the reservoir, provided at its end corresponding to the writer tip, a widening that fits under pressure in the mouth of the instrument and has an external ball that rests on the edge of said mouth, whose widening carries plugged in under pressure, a leading tip of the writing ball. (Machine-translation by Google Translate, not legally binding)
ES0085574U1961-01-271961-01-27
Replacement for ball point writing devices
ExpiredES85574Y
(en)