Piezo Device TechnologiesLogo Design Contest Logo Design Contest Contests / Piezo Device Technologies Piezo Device Technologies has selected their winning logo design. For $300 they received 120 designs from 25 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by Jet Return to Contest Return to Contest Withdrawn New #108 Withdrawn New #107 Discussion No comments yet.