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Portus S A
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Portus S A
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Priority to ES1973189697UpriorityCriticalpatent/ES189697Y/en
Publication of ES189697UpublicationCriticalpatent/ES189697U/en
Application grantedgrantedCritical
Publication of ES189697YpublicationCriticalpatent/ES189697Y/en
Retractable writing instrument, characterized essentially by the fact of comprising a barrel whose working end has a hole closed by an obturator that closes elastically and is capable of being pierced by the writing tip of a pen charge cartridge, slidably mounted inside the barrel and associated with a drive device for protruding or retracting said tip. (Machine-translation by Google Translate, not legally binding)