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Priority to ES102855UpriorityCriticalpatent/ES102855Y/en
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Publication of ES102855YpublicationCriticalpatent/ES102855Y/en
An improved key for trucks essentially characterized by the fact that it is constituted by a cylindrical central stem with a hexagonal mouth that presents in its upper middle area an orifice for passing a cross bar to said rod, which rod comprises its knurled center to be retained in the cited step forming a crossarm of equal arms or form a large lever arm by introducing the bar to its stop. (Machine-translation by Google Translate, not legally binding)
Device for reproduction of letters and similar characters for lettering and line drawing (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the systems of lateral retention of wheels and lock of the axis (Machine-translation by Google Translate, not legally binding)