TREA

Arrangements of coloured filters or screens

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Industry

  • CPC
  • F21L15/04
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F21Lighting F21LLIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION F21L15/00Details of kinds solely applicable to the devices covered by groups F21L2/00 - F21L14/00

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F21L15/04Arrangements of coloured filters or screens
Industries