Patents by Inventor Marilyn A. North

Marilyn A. North 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).

  • Keyboard Cover
    Patent number: 5419704
    Abstract: A keyboard training aid has a support resting on the keyboard around the text entry keys and an opaque cover pivotally mounted on the support. The cover extends over the text input keys so that they cannot be seen by a training operator. Two apertures in the top cover are aligned between the keyboard operator and the home keys in the center row so that the home keys can be viewed.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: May 30, 1995
    Inventor: Marilyn A. North