CPC Subgroup
G04B 3/10 Protecting means preventing overwinding (arranged in, or attached to, the barrel G04B1/20; in connection with keys G04B3/06; in connection with automatic winding devices G04B5/24 )
Full Title
Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously > by parts of the cases > Protecting means preventing overwinding (arranged in, or attached to, the barrel G04B1/20; in connection with keys G04B3/06; in connection with automatic winding devices G04B5/24 )
Top Applicants
Top 10 applicants by patent filingsfor class G04, 2013–2023, worldwide · Source: EPO PATSTAT
- THE SWATCH GROUP RESEARCH AND DEVELOPMENT CH 1,705
- ETA SA MANUFACTURE HORLOGERE SUISSE CH 1,443
- SAMSUNG ELECTRONICS COMPANY KR 1,104
- APPLE US 1,038
- SEIKO EPSON CORPORATION 875
- NIVAROX-FAR CH 781
- CASIO COMPUTER COMPANY 734
- MONTRES BREGUET CH 715
- SEIKO EPSON CORPORATION JP 715
- OMEGA CH 555