Patents by Inventor Robert L. Swartwout

Robert L. Swartwout 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: 4213369
    Abstract: A lapboard for an Appalachian dulcimer or like instrument holds the instrument in position on a person's lap and out of contact with the lap to enhance the tone level and quality of the instrument. Spring-loaded flap members of the lapboard contact the person's legs to prevent movement of the lapboard and of the instrument while the instrument is being played.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: July 22, 1980
    Inventor: Robert L. Swartwout