Patents by Inventor Raymond S. W. Lindsay

Raymond S. W. Lindsay 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).

  • Lawn mower and garden tool sharpener
    Patent number: 3996818
    Abstract: A hand-held tool for sharpening tool blades including blades of both reel and rotary type lawn mowers. The tool supports a plurality of cutters which are usable selectively to sharpen blades of different types. The tool includes guide means cooperating with each cutter to support the tool in its more effective sharpening position.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: December 14, 1976
    Inventor: Raymond S. W. Lindsay