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PCE
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DIFF Subgroup
F21V 13/04

the elements being reflectors and refractors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups > Combinations of only two kinds of elements > the elements being reflectors and refractors

CPC:

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) > Combinations of only two kinds of elements > the elements being reflectors and refractors

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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