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Priority to ES1975212431UpriorityCriticalpatent/ES212431Y/en
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Publication of ES212431YpublicationCriticalpatent/ES212431Y/en
Projection rule, of the type comprising a transparent body on which a graduated scale is engraved, capable of being partially projected onto a screen as the objective attached to the corresponding machine is displaced, essentially characterized by the fact that along the graduated scale there is a graphic signal that moves laterally as the scale advances, so that its projection on the screen determines a sliding indicator along one of the edges of the scale. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of devices applicable to muºequeria simulators of physiological functions. (Machine-translation by Google Translate, not legally binding)