CPC Main Group
F21V 11/00 Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 (characterised by cooling arrangements F21V29/502)
4 direct subcodes
Child Classifications
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- F21V 11/02 using parallel laminae or strips, e.g. of Venetian-blind type (F21V11/06 takes precedence)
- F21V 11/06 using crossed laminae or strips ; using lattices or honeycombs
- F21V 11/08 using diaphragms containing one or more apertures
- F21V 11/16 using sheets without apertures, e.g. fixed