Montgolfier brothers
In 1783, Argand met Montgolfier brothers Jacques-Étienne and Joseph-Michel in France and became closely involved with his sensational experiments to devise a hot air balloon. When he was there, his acquaintance Antoine-Aroult Quinquet, to whom he had shown an early prototype, began to manufacture the lamps himself, with minor change, and successfully fought a protracted legal battle for patent infringement.