Patents by Inventor Edwin W. Hill

Edwin W. Hill 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).

  • Burner-fired combined with wood-fired apparatus for drying crops
    Patent number: 4267645
    Abstract: An energy efficient crop-drying and curing system particularly suited for tobacco curing comprises a plurality of conventional oil or gas burner equipped barns illustrated as bulk-curing tobacco barns and an auxiliary wood furnace arranged so that the wood-provided heat can be selectively furnished to any of the barns as a sole or supplemental source of heat.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: May 19, 1981
    Inventor: Edwin W. Hill