Patents by Inventor Marvin H. Hutchins

Marvin H. Hutchins 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).

  • Musical instrument capo
    Patent number: 3933073
    Abstract: This device consists primarily of an L-shaped configurated body having one leg hollow and in which is slidably received a spring loaded bar carrying a rubber sleeve thereon for automatically depressing the strings of a musical instrument, downward upon the neck of the instrument and the body of the device is padded with foam rubber so as to prevent marring the finish of the neck.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: January 20, 1976
    Inventor: Marvin H. Hutchins