All of the companies had their own electric power systems, arc lighting systems, and even incandescent lamp designs for domestic lighting, leading to constant lawsuits and patent battles between themselves and with Edison.
Todas as empresas tiñan os seus propios sistemas de enerxía eléctrica, sistemas de iluminación de arco e mesmo deseños de lámpadas incandescentes para iluminación doméstica, o que levou a preitos e batallas constantes entre eles e con Edison (Skrabec, 2007, pp. ).