Patents by Inventor Donald E. Magai

Donald E. Magai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fluorescent light unit with dual light levels
    Patent number: 4358709
    Abstract: A screw-in fluorescent light unit having two light levels, for use in a 3-way socket. A reactor ballasts the lamp for high light output, and a resistor is added to ballast the lamp for low light output. A bilateral switch device is connected across the resistor to facilitate lamp starting at the low light output.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: November 9, 1982
    Assignee: General Electric Company
    Inventor: Donald E. Magai
  • Fluorescent light unit with dimmable light level
    Patent number: 4358710
    Abstract: A screw-in fluorescent light unit having high and low light levels, for use in a 3-way socket. A reactor ballasts the lamp for high light output, and a variable dimming circuit is added to ballast the lamp for variable low light output.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: November 9, 1982
    Assignee: General Electric Company
    Inventor: Donald E. Magai