F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F21
LIGHTING
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F21S
NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
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8/00
Lighting devices intended for fixed installation
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F21S8/02
of recess-mounted type, e.g. downlighters
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F21S8/026
intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
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