Patents by Inventor Roy I. Bishop

Roy I. Bishop 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).

  • Screed for leveling freshly poured concrete
    Patent number: 4256416
    Abstract: A screed for leveling freshly poured concrete comprises a pair of handle assemblies each comprising a body, a first handle extending upwardly from the body, a second handle extending laterally outwardly and upwardly from the body, and a leveling bar, such as a length of lumber, releasably attached at its ends to the respective handle assemblies.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: March 17, 1981
    Inventor: Roy I. Bishop