| 1/00 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) |
| 1/02 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) by electromagnets |
| 1/04 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) by electric motors with rotating or with reciprocating movement |
| 1/06 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) by electric motors with rotating or with reciprocating movement winding-up springs |
| 1/08 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) by electric motors with rotating or with reciprocating movement raising weights |
| 1/10 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) Protection against overwinding (in mechanical clocks or watches G04B 1/2, G04B 3/06, G04B 3/1) |
| 1/12 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) Protection against overwinding (in mechanical clocks or watches G04B 1/2, G04B 3/06, G04B 3/1) of the spring |
| 1/14 | Winding mechanical clocks electrically (winding mechanically G04B 3/00) Protection against overwinding (in mechanical clocks or watches G04B 1/2, G04B 3/06, G04B 3/1) of the weights |
| 3/00 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) |
| 3/02 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a pendulum |
| 3/027 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum (G04C 3/033 takes precedence) |
| 3/033 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a pendulum using torsion pendulums; using conical pendulums (construction thereof G04B 17/00) |
| 3/04 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a balance |
| 3/06 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance |
| 3/08 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork |
| 3/10 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork driven by electromagnetic means |
| 3/12 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork driven by piezo-electric means; driven by magneto-strictive means |
| 3/14 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) incorporating a stepping motor (G04C 3/02-G04C 3/12 take precedence) |
| 3/16 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) incorporating an electro-dynamic continuously rotating motor (G04C 3/02-G04C 3/12 take precedence) |
| 3/18 | Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (clocks driven by synchronous motors G04C 15/00) incorporating electro-thermal or electro-pneumatic driving means |