Patents Assigned to Research Activities, Incorporated
  • Information distribution system
    Patent number: 4602340
    Abstract: A system is provided for distributing coded time or other information signals through the electrical gridwork of a facility such as a home, office, factory, or mobile vehicle for purposes of information display and/or control and monitoring of equipment and activities thereof.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 22, 1986
    Assignee: Research Activities, Incorporated
    Inventor: Gustaf T. Appelberg