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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to ES0006038UpriorityCriticalpatent/ES6038U/en
Publication of ES6038UpublicationCriticalpatent/ES6038U/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Abstract
The arrangement of a frame or box with stepped horizontal surfaces each carrying holes in which levers are introduced with a platform in its upper part and a hole or hole in the lower one through which a rubber or spring is attached which is fixed in the two ends of each step on the back and between each lever by means of a bridge or other appropriate system. (Machine-translation by Google Translate, not legally binding)
ES0006038U1940-10-261940-10-26An apparatus for teaching and typing practice (Machine-translation by Google Translate, not legally binding)
PendingES6038U
(en)