| 968 / | HD | HOROLOGY |
|
| 446 | DD | ELECTROMECHANICAL CLOCKS OR WATCHES INDEPENDENT OF OTHER TIMEPIECES AND IN WHICH THE MOVEMENT IS MAINTAINED BY ELECTRIC MEANS (synchronization subclass 506) [G04C 3/00] {8} |
| 453 | DD | .~ Wherein movement is regulated by a pendulum [G04C 3/02] {5} |
| 458 |  | .~.~ Using electromagnetic coupling between electric power source and pendulum (subclass 464 takes precedence) [G04C 3/027] {5} |
| 459 | DD | .~.~.~> The pendulum controlling contacts and mechanically driving the gear-train (constructional details of contact devices subclasses 545 and 608) [G04C 3/027B] |
| 460 | DD | .~.~.~> The pendulum controlling contacts, thereby electromagnetically driving the gear-train or several gear-trains (generating driving pulses in master-clocks subclass 541) [G04C 3/027C] |
| 461 | DD | .~.~.~> The pendulum controlling contacts, the pendulum driving electromagnet simultaneously driving the gear-train [G04C 3/027D] |
| 462 | DD | .~.~.~> The pendulum controlling indirectly, i.e., without mechanical connection, contacts, e.g., by magnetic or optic means, etc. [G04C 3/027E] |
| 463 | DD | .~.~.~> The pendulum controlling the gear-train by means of static switches, e.g., transistor circuits, etc. [G04C 3/027F] |