• All sections
• G - Physics
• G09G - Arrangements or circuits for control of indicating devices using static means to present variable information
• G09G 3/38 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using electrochromic devices

Patent holdings for IPC class G09G 3/38

Total number of patents in this class: 347

10-year publication summary

Principal owners for this class