Patents by Inventor Robert J. DeHaven

Robert J. DeHaven 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).

  • Hook for a measuring tape
    Patent number: 4300289
    Abstract: A hook end for attachment to the free end of a graduated measuring tape, especially adapted to replace a broken free end.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: November 17, 1981
    Inventor: Robert J. DeHaven