Patents by Inventor Gerard P. Duhig

Gerard P. Duhig 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).

  • Character recognition device
    Patent number: 4493104
    Abstract: This invention is concerned with a character recognition device which includes a writing pad having a pair of sheets with one of the sheets comprising an area of high resistivity and the other one of the sheets comprising a layer of conductive material, the sheets being normally electrically insulated from one another but adapted to be brought into contact with one another by application of writing pressure by a writing implement upon the writing pad, the sheets being adapted to be connected to an electrical switching circuit whereby current is caused to flow through the pad along two alternate paths, wherein the high resistivity and the conductive sheet are separated by a layer of reticulated material and the conductive material is sufficiently elastomeric to provide good continuous electrical contact between the sheets when writing pressure is applied.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: January 8, 1985
    Assignee: Moore Business Forms, Inc.
    Inventors: Lawrence J. Lukis, Gerard P. Duhig