• All sections
• G - Physics
• G09G - Arrangements or circuits for control of indicating devices using static means to present variable information
• G09G 3/19 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments by control of light from an independent source using electrochromic devices

Patent holdings for IPC class G09G 3/19

Total number of patents in this class: 223

10-year publication summary

Principal owners for this class