Patents by Inventor James E. Del Giudice

James E. Del Giudice 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).

  • Graphite trombone slide
    Patent number: 4860629
    Abstract: A trombone has an other slide member fabricated from graphite tube. The graphite tube is 60-66% graphite and 40-34% expoxy resin and has a wall thickness in the range between 0.023 and 0.029 inches. The resulting trombone is lightweight and durable, resistant to bending or denting of the tube and has a smooth slide action.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 29, 1989
    Inventor: James E. Del Giudice