Hosting Call at 5pm ET on Thursday, April 6th   Tulsa, OK., March 15, 2023–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 on Thursday, April 6, 2023, the Company will host a conference call at 5:00