Molteni made the first devices used by Daguerre in 1839, and they continued to work together until the Molteni family moved to the new No. 36 rue Saint-Nicolas in 1846 (which became No. 62 rue du Château d'Eau in 1851).
The Molteni family also designed and built naval & marine instruments, mathematical, geodesic and measuring devices, photography apparatus and many of the early lighting systems.