Patents by Inventor Roland Eric Gunther

Roland Eric Gunther 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).

  • Mower blades
    Patent number: 3975891
    Abstract: This invention relates to mower blades made of metal with an inner layer of extremely hard material and so devised that attrition in use serves to maintain a sharp cutting edge.
    Type: Grant
    Filed: February 22, 1974
    Date of Patent: August 24, 1976
    Inventor: Roland Eric Gunther