Patents by Inventor Evelyn L. Roberts

Evelyn L. Roberts 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).

  • X-ray phantom
    Patent number: 4126789
    Abstract: An X-ray phantom having a radiolucent sealed case contains sea water, a floatation chamber sealed against the sea water and having an exterior opening, and various X-ray calibration targets for illustration of a variety of densities and shapes for radiographic study.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: November 21, 1978
    Inventors: Thomas M. Vogl, Evelyn L. Roberts