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PCE
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CPC Subgroup
G04B 19/18

Graduations on the crystal or glass, on the bezel, or on the rim

Full Title

Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F) > Dials ( for time-pieces without clockwork G04B49/04 ) > Graduations on the crystal or glass, on the bezel, or on the rim