Rothenbacher EngineeringLogo Design Contest Logo Design Contest Contests / Rothenbacher Engineering Rothenbacher Engineering has selected their winning logo design. For $250 they received 127 designs from 23 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by HarvestDesign Return to Contest Return to Contest Withdrawn Prefers others. #6 Discussion No comments yet.