ClearSign Technologies Corporation Receives Multi-Unit Process Burner Order for Major Energy Infrastructure Company

  Burners Sold by California Boiler Feature ClearSign Core™ NOx reduction technology   SEATTLE, October 13, 2020 – ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions, announces it has received an order for three