By Luminescent Substances (for Advertising G09f 19/18; Disc Or Drum Shaped Indicating Means With Marks Or Windows Subclass 142; With Numbers Or Number-marks Subclass 162; Illumination Of Dials And Hands, Etc., Subclass 213; Projection Of Hands And/or Scales On Weighing Apparatus G01g 19/00; On Measuring Instruments G01d 5/26b) [g04b 19/32] Patents (Class 968/215)