Patents by Inventor Thomas V. Walsh

Thomas V. Walsh 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).

  • Temporary manhole cover and method
    Patent number: 5529431
    Abstract: A temporary manhole cover constructed of glass fiber reinforced resin grate fits into the standard manhole opening is strong enough to support a motor vehicle and light enough to be lifted out from below or above and also includes a cut out to the edge for pipes, tubing, and wires to be trained through the opening down the manhole.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: June 25, 1996
    Assignees: Alfred T. Francis, Thomas V. Walsh
    Inventor: Thomas V. Walsh