Patents by Inventor William Joseph Harte

William Joseph Harte 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: 3973331
    Abstract: A teaching apparatus comprises a unitary plate member presenting a flat, impenetrable upper surface having a plurality of holes therein representing correct answer selections, for example. A pattern of projections on the surface extends upwardly therefrom and receives an instructional sheet having zones thereon for indicating answers selected in response to questions, a stylus being employed by the student to indicate each answer by pushing the stylus against the selected indicator zone. The zones and the areas of the surface therebeneath are aligned so that the stylus meets the surface but does not penetrate the sheet beneath incorrect indicator zones, whereas openings are punched in those zones representing correct answers due to the presence of the holes.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: August 10, 1976
    Inventor: William Joseph Harte