Patents by Inventor Leon W. Lambert

Leon W. Lambert 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).

  • Navigational aid
    Patent number: 4359628
    Abstract: A navigational aid device comprising three concentrically mounted relatively moveable scales and at least one centrally mounted rotatable arm defining a moveable radial line intersecting the scales and their axis of rotation, at least the central portion of the device being transparent or cut-away so that when placed on a map the map location appearing on the axis is visible to an operator using the device.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: November 16, 1982
    Inventor: Leon W. Lambert