CR

Christian Ruefenacht

ES Eta Sa Manufacture Horlogère Suisse: 6 patents #35 of 251Top 15%
📍 Bienne, CH: #39 of 249 inventorsTop 20%
Overall (All Time): #819,909 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
11513475 Timepiece comprising AM-PM indicating means 2022-11-29
9841734 Timepiece display mechanism with a fast corrector Antonio Merino, Jean-Luc Helfer, Giuseppe Cappadona 2017-12-12
9304494 Timepiece balance spring stud-holder with screws Raphael Courvoisier 2016-04-05
9298164 Timepiece balance spring stud-holder with screws Raphael Courvoisier 2016-03-29
9229432 Fast correction mechanism for timepieces Raphael Courvoisier, Antonio Merino, Giuseppe Cappadona 2016-01-05
7301854 Annual calendar mechanism for timepiece 2007-11-27