Patents by Inventor Leon Tighe

Leon Tighe 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).

  • Replacement edge drafting apparatus
    Patent number: 4531302
    Abstract: A replacement edge drafting device attaches to a drafting rule having a damaged edge and provides a new edge in place of the damaged edge. The device has an elongated body formed with a drawing section that provides the new edge and with an attachment section that joins the body to the damaged drafting rule.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: July 30, 1985
    Inventor: Leon Tighe