Argand, Aime, born in 1755, a chemist of Geneva. Inventor of the Argand lamp, which he brought out in England in 1782. The patent was also claimed by a Frenchman, Ambroise Lange, and finally taken out in France in their joint names, the priority of invention being conceded to Argand. The French Revolution, however, deprived him of all profit from his patent. Died, 1803.