Patents by Inventor Leon Gubri

Leon Gubri 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).

  • Swinging doors for shelters and to shelters equipped with such doors
    Patent number: 4428152
    Abstract: An underground shelter (1, 2, 3) for aircraft is equipped with a vertical door (5) mounted for swinging about a lower horizontal axis (X), the swinging movements of this door being controlled by means of external jacks (13), with axes inclined with respect to the horizontal, adapted to be retracted into pits (16) which are closable when the door is closed.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: January 31, 1984
    Assignee: Establissements L. Gubri
    Inventor: Leon Gubri