| 968 / | HD | HOROLOGY |
| 377 | | PROTECTING CLOCKWORKS BY SHIELDS OR OTHER MEANS AGAINST EXTERNAL INFLUENCES, E.G., MAGNETIC FIELDS, ETC. (demagnetizing apparatus subclass 783) [G04B 43/00] {3} |
| 378 | DD | .~> Component shock protection arrangements (shock damping bearings subclass 282; shock-damping in the case subclass 307; protection of the pendulum or chime during transport subclass 375) [G04B 43/00B] |
| 379 | DD | .~> Protection against temperature influences [G04B 43/00C] |
| 380 | DD | .~> Antimagnetic alloys (antimagnetic alloys with temperature compensation subclass 129; apparatus for antimagnetizing subclass 783; alloys in general C22C) [G04B 43/00R] |