Patents by Inventor Fred LeFriec

Fred LeFriec 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).

  • Dot matrix printer and method for printing multiple lines at different line spacings
    Patent number: 4953995
    Abstract: A method and apparatus for printing multiple lines of characters simultaneously on a dot matrix printer and making available to the user a choice of alternate line spacings without physical or mechanical alteration of the printhead. The printhead includes an uninterrupted array of print elements having a total height greater than the combined total height of the multiple lines that are simultaneously printed plus the combined height of the intervening line spaces. By directing columnar character data to selected sets of print elements, the printhead can produce characters of a constant height with selected variations in interline spacing.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: September 4, 1990
    Assignee: Output Technology Corporation
    Inventors: Louis Sims, Fred LeFriec, Joseph Dubner, Brian Peavey