LSI Industries Inc. (NasdaqGS:LYTS) acquired 3M Digital Signage Inc. Posted on 05/05/2014 by Ron Klammer Posted in Mergers & Acquisitions Tagged Software Leave a comment LSI Industries Inc. (NasdaqGS:LYTS) acquired 3M Digital Signage Inc., a company which provides software, support, and services to deploy digital signage systems.