In 1988, after he completed his studies in Business Economics at the Erasmus University and worked as Product-Marketing Manager for Royal Philips Electronics, he founded, with his wife Aletta Stas-Bax, the watch company Frédérique Constant.
The Constant Gardener | Pierre-Constant Budin | The Constant Gardener (film) | Planck constant | André Marie Constant Duméril | Constant Permeke | Benjamin Constant | Constant Lambert | Saint-Constant, Quebec | Planck's constant | Marius Constant | Jean-Joseph Benjamin-Constant | Emmanuel Constant | Dissociation constant | Constant Pressure System | Man of Constant Sorrow | Frederique Darragon | Faraday constant | Constant Vanden Stock Stadium | Constant Mews | Constant Lievens | Constant Chevillon | time constant | Susan Constant | Stefan–Boltzmann constant | solar constant | Saint-Constant, Cantal | Saint-Constant | Robbins constant | Physical constant |