ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,536, issued on Oct. 28, was assigned to ROLEX SA (Geneva).
"Spring for a notching system and timepiece notching system" was invented by Arthur Devillard (Champlecy, France) and James Rejzner (Saint-Julien-en-Genevoix, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A notching system (100) including a spring (1) having a first toothset including n first teeth (11a, 12a) a first member (2) having a second toothset including m second teeth (22a, 22b), and a second member (3) mounted so as to be movable, in particular mounted so as to be rotatable, with respect to the first member (2), the first and second toothsets being arranged such that, throu...