Leon Hatot was an innovative designer, inventing an automatic winding system named "Rolls" that changed modern watch making. Although this system was awarded with the Medal of Honor by the Society for the Encouragment of National Industry, the world financial crisis of 1929 stunted the growth of production.
In 1928, the company moved premises to Rue de Faubourg St Honore, a luxurious location appropriate for the company's quality of goods and an attractive area for their wealthy clientele.
Despite the economic crash of 1929, the company managed not only to survive but to grow, thanks to manufacturing rights for the "Rolls" mechanism in both France and Belgium. However, it is without doubt that the Hatot name and company would have been more of a driving force had their timings been more fortuitous.