ClearSign Technologies (CLIR) Appoints G. Todd Silva to its Board

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CLEARSIGN COMB (NASDAQ: CLIR) Delayed: 4.31 --0 (-0%)
Previous Close $4.31    52 Week High $6.24 
Open $4.31    52 Week Low $2.68 
Day High $4.31    P/E N/A 
Day Low $4.31    EPS $-0.60 
Volume 3,393