Northstar Cleanroom ProductsLogo Design Contest Logo Design Contest Contests / Northstar Cleanroom Products Northstar Cleanroom Products has selected their winning logo design. For $375 they received 204 designs from 29 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by castiza Return to Contest Return to Contest Withdrawn New #85 Withdrawn New #86 Withdrawn New #89 Withdrawn New #88 Withdrawn New #87 Discussion No comments yet.