In 1920 Houdry had established a manufacturing company for  steel springs and chains, the Manufacture Générale des Ressorts (M.G.R. ), in Beauchamp, Seine-et-Oise.
In 1920, Houdry established a manufacturing enterprise for steel springs and chains, known as Manufacture Générale des Ressorts (M.G.R.), situated in Beauchamp, Seine-et-Oise.