Patents Examined by Mark L. Powell
  • High frequency lighting system for gas discharge lamps
    Patent number: 4818918
    Abstract: A high frequency system for gas discharge lamps includes a method of, and apparatus for, controlling the operation of a plurality of gas discharge lamps and provides; a reduction in starting and operating voltage and current; an increased range of dimming; and improved efficiency and reliability.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: April 4, 1989
    Inventor: Pierce M. Murphy