Patents by Inventor Geo. L. Helgeson

Geo. L. Helgeson 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).

  • Radiation measurer or similar article
    Patent number: D250399
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: November 28, 1978
    Assignee: Helgeson Nuclear Services, Inc.
    Inventor: Geo. L. Helgeson