CPC Subgroup
G04B 19/34 Position of the hands projected optically
Full Title
Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F) > Position of the hands projected optically
G04B 19/34 Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F) > Position of the hands projected optically