Patents by Inventor D. M. Szymanski

D. M. Szymanski 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).

  • Patent number: 5090461
    Abstract: A router attachment which is particularly useful for cutting decorative slots or grooves in wood and/or other materials, particularly those decorative cuts that are present in dentil moulding(s).
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: February 25, 1992
    Assignee: Vermont American Corporation
    Inventors: Ved P. Gakhar, Joseph H. Ballou, James M. Leubbers, D. M. Szymanski