| 968 / | HD | HOROLOGY |
|
| 524 | DD | DRIVING MECHANISMS FOR CLOCKS BY MASTER CLOCKS [G04C 13/00] {2} |
| 525 |  | .~ Circuit arrangements; electric clock installations [G04C 13/02] {5} |
| 526 | DD | .~.~> Master-slave systems using transmission of singular pulses for driving directly slave clocks step-by-step (subclass 533 takes precedence) [G04C 13/02B] {4} |
| 531 | DD | .~.~> Master-slave systems using transmission of other driving signals, e.g., coded signals, etc. [G04C 13/02F] |
| 532 | DD | .~.~> Transmission systems for synchronization of pendulum of slave clocks by pendulums of master clocks [G04C 13/02K] |
| 533 | DD | .~.~> Pulse transmission systems with additional means for setting the time indication of slave clocks (subclass 532 takes precedence) [G04C 13/03] |
| 534 | DD | .~.~> Master clocks [G04C 13/04] {4} |