Patents by Inventor Mark E. Gillespie

Mark E. Gillespie 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).

  • Bowstring-mounted aiming sight
    Patent number: 4656746
    Abstract: A rear peep-sight aiming device is pivotably mounted upon the bowstring of a bow having a forward aiming sight. The sight device may also have an open notch aiming sight. A weighted counterbalance causes the device to automatically swing by gravity effect to a vertical sighting plane. The construction of the device facilitates use by left and right-handed archers.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: April 14, 1987
    Inventor: Mark E. Gillespie