In 1933, he won the title of "Best chaser, gold- and silversmith of France" for a goldsmith work called Head of Jean, now on permanent collection in the Museum of Fine Arts, Boston.
From 1939 – 1940, he created the Salón Dorado (Golden Room) in what was then La Sabana International Airport Diplomat Lounge, now part of the Costa Rican Museum of Art.
This is a stucco-and-bas-relief mural covering 150 square meters and representing major events and periods in Costa Rican history from pre-Columbian times up to 1940.
In the United States he designed and created sacred vessels, jewelry, and sculpture for private clients as well as for the firms Rubel, Van Cleef and Arpels, Verdura, Schlumberger, Bronzini, Cartier, David Web, Tiffany & Company[2] and Steuben Glass Works.
Féron taught a number of prominent artists over the years, many of whom maintain their own workshops and carry on his traditions, including Pierre Etienne Lahaussois[4] and Carvin French.