Efficient Pipeline, LLCLogo Design Contest Logo Design Contest Contests / Efficient Pipeline, LLC Efficient Pipeline, LLC has selected their winning logo design. For $375 they received 54 designs from 11 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by Kassai Return to Contest Return to Contest Withdrawn New #14 Withdrawn New #12 Discussion No comments yet.