Patents Assigned to Don Gilbert Industries, Inc.
  • Emergency sign
    Patent number: 4682147
    Abstract: An illuminated exit sign having a plurality of series connected light emitting diodes arranged to form the word "exit" and a control circuit for supplying power to the series connected diodes from line power and, during power failures, from battery power. The control circuit illuminates the diodes continuously during normal operation and alternately switches the diodes on and off during a power failure.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: July 21, 1987
    Assignee: Don Gilbert Industries, Inc.
    Inventor: Norman E. Bowman
  • Wall sconce light fixture
    Patent number: D364479
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: November 21, 1995
    Assignee: Don Gilbert Industries, Inc.
    Inventor: David Gilbert