| 968 / | HD | HOROLOGY |
|
| 524 | DD | DRIVING MECHANISMS FOR CLOCKS BY MASTER CLOCKS [G04C 13/00] {2} |
| 547 | DD | .~ Slave clocks actuated intermittently [G04C 13/08] {3} |
| 548 |  | .~.~ By electromechanical step-advancing mechanisms (independent clocks or watches incorporating a stepping motor subclass 490; stepping motors in general H02K 33/00) [G04C 13/10] {2} |
| 549 | DD | .~.~.~> Setting the time-indicating means (master-slave systems with setting means subclass 533; adjusting independently driven clocks subclasses 498 and 506) [G04C 13/10C] |
| 550 | DD | .~.~.~> With rotating armature [G04C 13/11] |