Patents by Inventor Don Guthrie

Don Guthrie 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).

  • Programmable dichromatic legend lighted switches
    Publication number: 20050231946
    Abstract: Illumination color for a dedicated legend display area of an illuminated pushbutton switch may be programmed by controlling application of the driving voltage to one of two or more different groups of interleaved LEDs alternately illuminating the display area. Each of the different LED groups illuminates the display area with a different color, produced by different color LEDs, filtering of individual LEDs within each group, or dip-coating the LEDs. Application of the driving voltage to different switch input pins causes the legend to be illuminated by different LED groups in different colors, reflecting different conditions.
    Type: Application
    Filed: March 15, 2005
    Publication date: October 20, 2005
    Applicant: AEROSPACE OPTICS, INC.
    Inventor: Don Guthrie