Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Individual
Original Assignee
Individual
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Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to ES81512UpriorityCriticalpatent/ES81512Y/en
Publication of ES81512UpublicationCriticalpatent/ES81512U/en
Application grantedgrantedCritical
Publication of ES81512YpublicationCriticalpatent/ES81512Y/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Abstract
A card with perfected marginal perforations, constituted by a sheet of rectangular shape with a chamfered apex, and with one or two perimeter rows of circular perforations. To express a characteristic, the corresponding perforation is eliminated by a cut. In each case the cut extends to the hole of a row or to the holes corresponding to two rows according to the coding of the punched cards. These grooves determine the separation of chips as they are not supported by the passing needles, as in the case in which they pass through holes. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the manufacture of construction elements that include perforations (Machine-translation by Google Translate, not legally binding)
Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)