Patents by Inventor Kenneth M. Pedersen

Kenneth M. Pedersen 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).

  • Display units
    Patent number: 4796170
    Abstract: A display unit has a light source, an indicia bearing diffusion sheet or transparent having masked, transparent and translucent areas and a series of refractive layers are placed over the diffusion sheet. On the light being lit, and the light rays passed outwardly through the transparent or translucent areas and through the refractive layers, the indicia are each surrounded with a penumbra of light which gives a three dimensional effect to the display of the indicia.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: January 3, 1989
    Inventors: Kenneth M. Pedersen, Alan M. Filmer