ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,457, issued on Sept. 9, was assigned to Blancpain SA (Le Brassus, Switzerland).
"Horological movement comprising a chronograph mechanism" was invented by Mehdi Denden (Les Rousses, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A horological movement including a running train driven by a first energy source; a regulating member for regulating the running train; a chronograph mechanism including a chronograph train driven by a second energy source; a coupling configured to couple the chronograph train, on demand, to the regulating member to regulate the chronograph train using the regulating member; a chronograph start/stop control device coo...