Signal I/O Inc.Logo Design Contest Logo Design Contest Contests / Signal I/O Inc. Signal I/O Inc. has selected their winning logo design. For $375 they received 89 designs from 24 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by bpn Return to Contest Return to Contest Withdrawn 8th #1 Withdrawn 10th #7 Withdrawn Prefers others. #2 Discussion No comments yet.