Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [7]
F21Y 101/00
Point-like light sources [7]
F21Y 101/02
·
Miniature, e.g. light emitting diodes (LED) [7]
F21Y 103/00
Elongated light sources, e.g. fluorescent tubes [7]
F21Y 103/02
·
curved, e.g. ring-shaped [7]
F21Y 103/025
· ·
U-shaped [7]
F21Y 105/00
Planar light sources [7]
F21Y 111/00
Light sources of form not covered by preceding groups [7]