Brief: Clearsign Technologies Corp says Board Vacated Position Of Chairman Of Board, Effective Immediately
June 7 (Reuters) - Clearsign Technologies Corp CLIR.O :
* CLEARSIGN TECHNOLOGIES CORP -BOARD VACATED POSITION OF
CHAIRMAN
OF BOARD, EFFECTIVE IMMEDIATELY
Further company coverage: CLIR.O
((Reuters.Briefs@thomsonreuters.com;))