Patents Assigned to Helios S.R.L.
  • Loudspeaker
    Patent number: D722994
    Type: Grant
    Filed: December 21, 2013
    Date of Patent: February 24, 2015
    Assignee: Helios S.R.L.
    Inventors: Gian Luca Masciangelo, Guido Guidotti Mori