Patents by Inventor Ralph W. Smith

Ralph W. Smith 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).

  • Apparatus for comminuting tree stumps
    Patent number: 4744396
    Abstract: Apparatus for comminuting tree stumps, the apparatus includes a vehicle having a flat bed portion, rails disposed on the flat bed portion, a frame slidably disposed on the rails, slide power means to move the frame on the rails, an arm pivotally mounted on the frame, a cutter wheel mounted on the arm, a handle mounted proximate a free end of the arm, and slide power switch means mounted on the arm proximate the handle and operable to activate the slide power means to move the frame on the rails.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: May 17, 1988
    Inventor: Ralph W. Smith
  • Guide for administering eye drops
    Patent number: D337383
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: July 13, 1993
    Inventor: Ralph W. Smith