Patents by Inventor Keith W. Donovan

Keith W. Donovan 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).

  • Protective cover for the strings of a musical instrument
    Patent number: 4121494
    Abstract: An elongated clip configurated shield to encase the strings of a musical instrument, the shield being formed of a yieldable plastic material with a cloth lining, impregnated with a rust and moisture inhibitor chemical, securely cemented therewithin.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: October 24, 1978
    Inventors: David L. Reno, Keith W. Donovan