Patents by Inventor Paul J. Hollahan

Paul J. Hollahan 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).

  • Exercise apparatus for the neck
    Patent number: 4893808
    Abstract: A neck exercise apparatus which allows movement about three machine axes which correspond to the cervical axes of flexion/extension, lateral flexion and rotation. Selective resistance to movement about each axis may be provided and torque, position and velocity measurements made with respect to neck movement performance against the resistance.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: January 16, 1990
    Inventors: Donald R. McIntyre, Paul J. Hollahan, James A. Sawhill