 Building out its technology and services portfolio with 14 patents or patents pending Provides rail train inspections with its proprietary Railcar Inspection Portal RIP technology New CEO Charles Chuck Ferry took over in September 2020 What Duos Technologies does: Duos Technologies Group Inc NASDAQ:DUOT offers an array of intelligent technologies and services to support a diverse range of companies operations and security. Based in Jacksonville, Florida, Duos specializes in automated systems with a focus on the protection of critical infrastructure, notably the automation of complex mechanical inspections of rail assets. 