Aeronautical engineer and, at the same time, painter, dinanderie (copper work) artist, and fabricator of furnishings, Mergier appeared only once at the Salon des Artistes Decorateurs (Salon of Design Artists) in 1928 with some vases and diverse objects in etched metal.
Around the same time, he provided Jacques Doucet, for his studio in Neuilly, with a support cabinet trimmed in leather for storing manuscripts.
In the 1930s at the salon d’Automne (Autumn Salon), Paul Mergier also presented dinanderie objects, enamel vases, and furniture fitted with leather doors inlaid with sterling silver.
Cf. P. KJELLBERG, Art Déco, Les maîtres du mobilier, Le décor des paquebots, Ed. de l’Amateur, Paris, 2000, p. 170.