Patents Assigned to Mountain Systems, Inc.
  • Vandal-proof communication system
    Patent number: 4518826
    Abstract: A touch switch and monitor lamp associated with an intercom station are embedded in a protective wall mounted plate with exposed ends flush with the planar surface of the plate which has openings through which sound is transmitted to or from a folded horn of a transducer having its driver unit spaced rearwardly of the plate and laterally of the openings.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: May 21, 1985
    Assignee: Mountain Systems, Inc.
    Inventors: Eddie T. Caudill, Richard T. Caudill, Lyle N. Conley