Patents by Inventor Gordon K. Prestedge

Gordon K. Prestedge 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).

  • Revetments and units for use in constructing revetments
    Patent number: 5221157
    Abstract: Revetments are constructed using a plurality of revetment units which are arranged on river bed or the like. Each revetment unit comprises a stem and a disc-like head. The stem is stepped so that it has a relatively short larger diameter part and a relatively long smaller diameter part. The heads of units in each upper course lie behind the heads of the units in the course below and rest on the larger diameter parts. The heads and stems are preferably circular in cross-section but can be multi-facetted.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: June 22, 1993
    Inventor: Gordon K. Prestedge