Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F)

Child Classifications

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• G04B 19/02 Back-gearing arrangements between gear train and hands
• G04B 19/04 Hands; Discs with a single mark or the like
• G04B 19/06 Dials ( for time-pieces without clockwork G04B49/04 )
• G04B 19/20 Indicating by numbered bands, drums, discs, or sheets
• G04B 19/22 Arrangements for indicating different local apparent times; Universal time pieces
• G04B 19/24 Clocks or watches with date indicators ; Clockwork calendars
• G04B 19/26 Clocks or watches with indicators for tides, for the phases of the moon, or the like
• G04B 19/28 Adjustable guide marks or pointers for indicating determined points of time
• G04B 19/30 Illumination of dials or hands
• G04B 19/34 Position of the hands projected optically