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Individual
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Individual
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Priority to ES0039364UpriorityCriticalpatent/ES39364U/en
Publication of ES39364UpublicationCriticalpatent/ES39364U/en
An improved school pen, characterized in that it consists of a pen known or not, centered in the interior and very close to one of its ends is a retractable lug which, under the expansion of a spring, penetrates a drill made to the effect on the sliding lid keeping it closed, and because the same lug is used as an opening limiting organ by means of a small transverse rib enabled on the front edge of said lid; which, when making a stop against the aforementioned lug, prevents the lid from escaping its guides and detaching from the plumier. (Machine-translation by Google Translate, not legally binding)
ES0039364U1953-12-031953-12-03A perfected school pencil (Machine-translation by Google Translate, not legally binding)
PendingES39364U
(en)