Patents by Inventor David B. Mugford

David B. Mugford 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).

  • Weight device for athletic racket
    Patent number: 4538812
    Abstract: A weight device for attachment to a tennis racket having two sheets separated by an elastic member. Each sheet contains a plurality of weights which are housed in chambers. The chambers are formed by the joining of two layers of flexible material at spaced locations.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: September 3, 1985
    Inventors: David B. Mugford, Sidney J. Guidicianne