Patents by Inventor Elizabeth A. Midwinter

Elizabeth A. Midwinter 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: 4839635
    Abstract: The present invention constitutes a display system (10) for alpha-numeric and graphic images. The system provides a signboard on which varying images of comparably large dimensions can be made to appear. The system comprises an input matrix (12), a display matrix (14), and a large number of optical conductors (16) such as optical fibers which interconnect corresponding parts of the matrixes. Optical images focused on the front face (15) of the input matrix appear in expanded form on the display face (24) of the output matrix. The system may be constructed from a large number of small units (60) comprising an input bundle (62), an output block (22), and a group of optical fibers (66). These units may be easily manufactured by a process involving a limited number of steps.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: June 13, 1989
    Assignee: Inwave Corporation
    Inventors: Lee M. Harris, Dix L. Evans, Elizabeth A. Midwinter