Patents by Inventor James C. Bradford

James C. Bradford 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).

  • Head-mounted analog retina test set
    Patent number: 4850690
    Abstract: An eyeglass testing device is provided with independent side-to-side positioning of left and right lenses and independent side-to-side and front-to-back positioning of a separate set of front left and right test lenses on a platform attached with universal adjustment to a head harness and worn by a patient while being tested for vision assistance.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: July 25, 1989
    Inventors: William S. Parker, James C. Bradford