Patents by Inventor Thomas Pratt, deceased

Thomas Pratt, deceased 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).

  • Paving block
    Patent number: D260935
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: September 22, 1981
    Assignee: Mono Concrete Limited
    Inventor: Thomas Pratt, deceased