TREA

Combinations of only three kinds of elements

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Industry

  • CPC
  • F21V13/12
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F21Lighting F21VDETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00F21V11/00

Current Industry

F21V13/12Combinations of only three kinds of elements
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