"Inventions at the Borders of History, Re-significance of Media Technologies From Latin America" explores the emergence of influential sonic, visual and computational technologies such as photography, color television and computer music in Latin America in parallel with and even before the development of mainstream technologies in the US and Europe. It investigates the reasons why and the way in which Latin American researchers developed technologies that remain widely unknown today. To do so this dissertation establishes a close dialog with the discourse of media history, focusing on the invention process proposing a re-significance of the technologies studied on the basis of a theoretical and experimental approach.