Share this article Share this article SEATTLE, Feb. 17, 2021 /PRNewswire/ -- 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, announced today that the Company has entered into an agreement with California Boiler for the sale and installation of "ClearSign Core™" enabled ultra-low NOx combustion equipment into the U.S. market. In terms of the agreement, both companies will be responsible for sal...