F21YLevel 3

INDEXING SCHEME ASSOCIATED WITH SUBCLASSES

GET/api/v1/systems/patent_cpc/nodes/F21Y

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F21Y 2101/00Point-like light sources

F21Y 2103/00Elongate light sources, e.g. fluorescent tubes

F21Y 2105/00Planar light sources

F21Y 2107/00Light sources with three-dimensionally disposed light-generating elements

F21Y 2109/00Light sources with light-generating elements disposed on transparent or translucent supports or substrates

F21Y 2111/00Light sources of a form not covered by groups

F21Y 2113/00Combination of light sources

F21Y 2115/00Light-generating elements of semiconductor light sources

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