ClearSign Technologies Corporation Announces Second Quarter 2021 Conference Call

Hosting Call at 5pm ET (2pm PT) on Wednesday, September 8, 2021   SEATTLE, August 17, 2021 –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 that on Wednesday, September 8, 2021 the Company will host