TREA

Lighting devices or systems employing combinations of electric and non-electric light sources Replacing or exchanging electric light sources with non-electric light sources or vice-versa

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Industry

  • CPC
  • F21S19/00
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F21Lighting F21SNON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF

Current Industry

F21S19/00Lighting devices or systems employing combinations of electric and non-electric light sources Replacing or exchanging electric light sources with non-electric light sources or vice-versa

Sub Industries

F21S19/005Combining sunlight and electric light sources for indoor illumination
Industries