US Patent Issued to The Swatch Group Research and Development on April 15 for "Horological movement equipped with an oscillator comprising a piezoelectric balance-spring" (Swiss Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,944, issued on April 15, was assigned to The Swatch Group Research and Development Ltd (Marin, Switzerland).

"Horological movement equipped with an oscillator comprising a piezoelectric balance-spring" was invented by Matthias Imboden (St-Blaise, Switzerland), Alexandre Didier (Erlach, Switzerland) and Alexandre Haemmerli (Neuchatel, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An horological movement includes an analogue time display, a geartrain, a barrel and an electromechanical oscillator, which is formed of a resonator, including a balance and a piezoelectric balance-spring, and a mechanical escapement, and further includes an elec...