Patents by Inventor Thomas G. Menzel

Thomas G. Menzel 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).

  • Self-releasing jack assembly
    Patent number: 4136891
    Abstract: A self-releasing jack for installation on a trailer tongue that releases upon the application of strong rotational forces applied to the base of the jack when the trailer is inadvertently towed without raising the jack.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: January 30, 1979
    Inventor: Thomas G. Menzel