Construction per se of lighting devices for vehicles and primarily intended to indicate the vehicle, or parts thereof, or to give signals to other traffic (Fulltext... Hierarchy... Expanded...F21Q 5/00 takes precedence; arrangements of optical signalling devices on vehicles in general, the mounting or supporting thereof or circuits therefor Fulltext... Hierarchy... Expanded...B60Q)
Devices producing a focused beam, e.g. for lighthouses
F21Q 5/00
Lighting devices for signalling employing combinations of electric and non-electric light sources; Replacing electric by non-electric light sources or vice-versa, in lighting devices for signalling