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CPC
F21V14/085
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Parent Industries
F
MECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS
F21
Lighting
F21V
DETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION
F21V14/00
Changing the characteristics or distribution of the light emitted by adjustment of parts or by interposition of elements with electrically controlled variable light transmissivity
Current Industry
F21V14/085
in portable lighting devices
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