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Individual
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Individual
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ES49034A1910-10-101910-10-10Un sistema de accionado a distancia para el encendido y el apagado de los faroles de gas, desde una columna central.
ExpiredES49034A1
(es)
Un aparato perfeccionado para encender y apagar automáticamente, con rapidez y a distancia los faroles de gas para el alumbrado público y los de otras clases.