But it was Franck Muller who made the tonneau case a part of contemporary watchmaking with the Cintree Curvex - Cartier, on the other hand, invented the shape in 1906 - so the brand owns the shape all rights. In fact, the Cintree Curvex was one of the "it" watches of the 1990s, so successful it arguably inspired all tonneau-shaped watches in 21st century watchmaking.
https://www.proreviewwatch.co
https://www.chronowrist.ru