Hettier & Vincent.
The association between the draftsman Charles Louis Hettier, Born in Paris in 1868 and Calixte Vincent, born in Lachapelle-Graillouse, in 1876, died in Paris, in 1945,  dates at least from the years before the First World War, around 1912.
Installed since their beginning in 43 rue des Tournelles they gradually grew their business and in 1929 they bought the Millet house on the prestigious Place de Vosges in Paris to attract a high end clientele. 
After the Second World War, the widow Vincent ran the company until resale.