CPC Subgroup
F21V 3/06 characterised by the material
Full Title
Globes; Bowls; Cover glasses (with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506) > characterised by materials, surface treatments or coatings > characterised by the material
4 direct subcodes
Child Classifications
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- F21V 3/08 the material comprising photoluminescent substances