CPC Subgroup
F21K 9/20 Light sources comprising attachment means
Full Title
Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers > Light sources comprising attachment means
2 direct subcodes
Child Classifications
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- F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes