DIFF Subgroup
G09G 3/08 using incandescent filaments
Introduced: January 1980
Full Title
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 > using controlled light sources > using incandescent filaments
No child classifications to compare. This is a leaf node in both IPC and CPC.