DIFF Subgroup
G09G 3/12 using electroluminescent elements
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 electroluminescent elements
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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