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Individual
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Individual
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Priority to ES417072ApriorityCriticalpatent/ES417072A1/en
Publication of ES417072A1publicationCriticalpatent/ES417072A1/en
Set alarm system and emergency power supply, characterized by consisting of an accumulator battery maintained in permanent charge by the rectified low voltage current of the secondary of a transformer whose primary is powered by the industrial network, supplying its charge, said battery, to the emergency and alarm circuits, the latter being able to operate independently of any restriction or failure of the external supply. (Machine-translation by Google Translate, not legally binding)
ES417072A1973-07-091973-07-09Alarm set and emergency feeder system. (Machine-translation by Google Translate, not legally binding)
ExpiredES417072A1
(en)
Improvements in electrical equipment for the power supply of a circuit of utilization and charge of a battery (Machine-translation by Google Translate, not legally binding)