CPC Main Group
F21V 13/00 Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00 (controlling the distribution of the light emitted by adjustment of elements F21V14/00)
2 direct subcodes
Child Classifications
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- F21V 13/02 Combinations of only two kinds of elements
- F21V 13/12 Combinations of only three kinds of elements