Patents by Inventor Dieter Hopf

Dieter Hopf 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: 4335641
    Abstract: A string instrument, such as a guitar, has a resonance body and a bridge provided with a string-contacting surface. A string-supporting element is provided on the body and a string-securing device is also provided on the body but is separate from and spaced from the bridge and has a second string-contacting surface. One or more sound openings are provided in the resonance body and surround a center region of the bridge. A string-deflecting element is also provided on the center region of the bridge spaced from and opposite the first string-contacting surface.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: June 22, 1982
    Inventor: Dieter Hopf