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Priority to ES1970162329UpriorityCriticalpatent/ES162329Y/en
Publication of ES162329UpublicationCriticalpatent/ES162329U/en
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Publication of ES162329YpublicationCriticalpatent/ES162329Y/en
Device for the teaching of the chemical formulation, characterized because it is constituted by bound sheets, in whose anverses they present organized groups of symbols of component parts of chemical compounds in correspondence with whose symbols are mounted electrical, double and simple contacts, in columns for the different valences; and in the reverse printed and different circuits, to establish connection between the terminals that correspond: to elements that form compounds, to those that do not constitute them to the valences not used; whose set is complemented by an electrical tester, with terminals that can be coupled to said contacts, a pilot lamp for each of the three circuits, batteries that supply them and a circuit change relay according to the connection made, whose lamps indicate: good, bad and error. (Machine-translation by Google Translate, not legally binding)
ES1970162329U1970-10-101970-10-10
DEVICE FOR THE TEACHING OF CHEMICAL FORMULATION.
ExpiredES162329Y
(en)
Table of experimentation constituted by an insulating material to make structures and test connections. (Machine-translation by Google Translate, not legally binding)
Electrical device to eliminate the rupture spark in the contacts when opening the circuit. (Machine-translation by Google Translate, not legally binding)