Patents by Inventor Jean P. Leuenberger

Jean P. Leuenberger 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: 4346445
    Abstract: A portable alphanumeric and symbol drafting device which essentially comprises a mechanically functioning keyboard unit, which is flexibly connected to an electronics package unit. Accordingly, the keyboard unit, which preferably weighs on the order of only two pounds, comprises a singularly useful device for a draftsman, since it allows a string of characters to be most accurately applied upon a drawing surface, by manipulation of only the keyboard unit. The keyboard unit may also include an attachment for mating with a standard parallel-arm drawing device. The keyboard unit comprises a first longitudinal edge, which is used to establish an origin or base line for the string of characters to be lettered and includes a carriage means for supporting a drafting pen in a manner to allow it to be operably controlled for a longitudinal (x-axis) and transverse (y-axis) movement proximate this first longitudinal edge of the housing.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: August 24, 1982
    Assignee: KOH-I-NOOR Rapidograph
    Inventors: Jean P. Leuenberger, David J. Logan, Clifford A. Scorso, Jr.