| 968 / | HD | HOROLOGY |
| 103 | DD | MECHANISMS FOR STABILIZING FREQUENCY (magnetic subclass 497; in striking mechanisms subclass 224; stopping and regulating of the running subclass 234; electrical and thermoelectric regulating mechanisms subclass 496) [G04B 17/00] {8} |
| 114 | | .~ Setting the frequency [G04B 17/12] {3} |
| 115 | DD | .~.~> By displacement of devices carried by the pendulum or by adjusting the pendulum length (pendulums and suspension subclass 105; self-adjustment of the regulating lever subclasses 122, 123, and 509; adjusting the stroke of the pendulum subclass 123; indicating by acoustic means subclass 217; synchronization with a standard clock subclass 509; metronome with a variable length subclass 821) [G04B 17/12B] |
| 116 | DD | .~.~> By adjusting the devices fixed on the balance (construction of the pendulum subclass 110; balancing subclass 132) [G04B 17/12C] |
| 117 | DD | .~.~> Adjustment devices [G04B 17/14] {5} |