F21V 9/08
Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
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Edits on 16 Mar, 2022
Golden AI
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Edits on 5 Mar, 2022
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F21V 9/08
Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
Infobox
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Parent classification
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