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ES10712A1890-03-141890-03-14El sistema de Westinghouse para alumbrado eléctrico en áreas extensas con lámparas e instalaciones peculiares.
ExpiredES10712A1
(es)
Unas mejoras en un procedimiento para la fabricación y construcción de lámparas eléctricas incandescentes con la disposición de las mismas sobre las líneas o conductores de la corriente eléctrica.