Patents by Inventor Richard Walston

Richard Walston 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).

  • Staircase preform with wood trim
    Patent number: 5309687
    Abstract: A curved stairway preform designed to be finished in trim thereby simulating a completely wooden curved stairway.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: May 10, 1994
    Inventor: Richard Walston