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Diagonal S A
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Diagonal S A
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Application filed by Diagonal S AfiledCriticalDiagonal S A
Priority to ES1972184198UpriorityCriticalpatent/ES184198Y/en
Publication of ES184198UpublicationCriticalpatent/ES184198U/en
Application grantedgrantedCritical
Publication of ES184198YpublicationCriticalpatent/ES184198Y/en
A device for the correction of examinations constituted by a base part or box of rectangular contour, open in front and on top, characterized in that a hinged lid is attached to the rear wall of the box, bearing on its underside a plate with punches directed outwards that are introduced when folding the cover into corresponding holes of two perforated parallel plates, integral with the base, and between which the chip to be corrected is arranged. (Machine-translation by Google Translate, not legally binding)
ES1972184198U1972-09-291972-09-29
A DEVICE FOR THE CRRECTION OF EXAMS.
ExpiredES184198Y
(en)