Patents by Inventor Cullen Casey

Cullen Casey 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 with keys concentrated in clusters
    Patent number: 4579470
    Abstract: A typewriter keyboard arrangement with keys concentrated in clusters in such a manner so as to be operated by specific fingers designated for specific clusters. Keys are clustered and clusters arranged to allow rapid finger motion with little hand motion. The keyboard arrangement also allows the hands and arms to be positioned in a natural manner in relation to the body.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: April 1, 1986
    Inventor: Cullen Casey