Patents by Inventor Bert K. Littlejohn

Bert K. Littlejohn 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).

  • Patent number: 5121547
    Abstract: A bow sight to aid an archer when shooting from an elevated platform--such as a tree stand. This particular type of bow sight works on the pendulum principle. All pendulum sights work basically on the same principle. That is, once the unit is sighted-in using the pin designated by the manufacturer, that pin can then be held on target from the base of the tree to thirty-five yards distance. The unique design of this particular pendulum sight enables the incorporation of a scope for magnification of target. This sight also incorporates a locking device which enables the archer to use the unit as a conventional sight for ground level shooting.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: June 16, 1992
    Inventor: Bert K. Littlejohn