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Sprait S A
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Sprait S A
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Priority to ES479614ApriorityCriticalpatent/ES479614A1/es
Publication of ES479614A1publicationCriticalpatent/ES479614A1/es
Sistema de alarma para protección de viviendas, caracterizado porque está constituido por un dispositivo que se pone en funcionamiento mediante un interruptor oculto, con lo que se enciende un piloto durante un tiempo, y apagándose antes del tiempo previsto y volviéndose a encender en el caso de que alguna de las puertas protegidas haya quedado abierta
ES479614A1979-04-161979-04-16Sistema de alarma para proteccion de viviendas.
ExpiredES479614A1
(es)