On January 22, 1675 Huygens commissioned Isaac Thuret to complete the first model (prototype) of a pocket watch using a balance-spring (hairspring) and balance (foliot) after their design.
Jean Melly was born on 22nd January, 1676 in Geneva. Friedrich Berchthold was born on 22nd January, 1735. Pierre-Charles-Vincent Ancel was born on 22nd January, 1780 in Saint-Nicolas d'Aliermont geboren. Ulysse Nardin was born on 22nd January, 1823. Isaline-Mélanie Huguenin (Virchaux) was born on 22nd January, 1831 in La Chaux-du-Milieu. Feodor William Rüffert was born on 22nd January, 1835 in Borna near Leipzig. Adolphe Schley was born on 22nd January, 1844 in Beaucourt. Armand Couaillet was born on 22nd January, 1865. John Henri LeCoultre was born on 22nd January, 1872 in Le Sentier. Georges-Armand Gamard was born on 22nd January, 1877 in Saint-Nicolas d'Aliermont.
Jean-Jacques Delépine died on 22nd January, 1858 in Saint-Nicolas d'Aliermont. Marie-Marguerite-Constance Celleir died on 22nd January, 1860 in Saint-Nicolas d'Aliermont. Étienne-Nicolas Gamelin died on 22nd January, 1870 in Saint-Nicolas d'Aliermont. Samuel Franz died on 22nd January, 1896 in Engelfangen (Saarbrücken). Jules Étienne (Tiennon) Piguet died on 22nd January, 1898. Eugênie-Augustine Boé died on 22nd January, 1966 in Villy-Le-Bas, Seine-Maritime.