ClearSign Technologies (NASDAQ:CLIR) reported quarterly losses of $(0.39) per share which missed the analyst consensus estimate of $(0.29) by 34.48 percent. This is a 2.63 percent decrease over losses of $(0.38) per share from the same period last year. The company reported quarterly sales of $191.000 thousand which missed the analyst consensus estimate of $1.271 million by 84.97 percent. This is a 52.37 percent decrease over sales of $401.000 thousand the same period last year.