DIFF Subgroup
F21S 43/145 Surface emitters, e.g. organic light emitting diodes [OLED]
Introduced: January 2018
Full Title
Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights > characterised by the light source > characterised by the type of light source > Light emitting diodes [LED] > Surface emitters, e.g. organic light emitting diodes [OLED]
No child classifications to compare. This is a leaf node in both IPC and CPC.