Patents by Inventor William O. Harrington

William O. Harrington 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).

  • Patent number: 4204455
    Abstract: A playing aid is disclosed to be mounted on the hand for positioning the thumb and fingers to enable the playing of selected intervals of musical pitches on a keyboard instrument such as a piano, organ, synthesizer and the like. The thumb and fourth finger are rigidly held apart a predetermined amount by a pair of grips interconnected by a raised bridging portion adapted to elevate the remaining fingers above the plane of the grips. The device enables simultaneous depression of at least a pair of keys corresponding to selected tonal intervals.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: May 27, 1980
    Inventor: William O. Harrington