Patents by Inventor Palmer Hafdahl

Palmer Hafdahl 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).

  • Walker
    Patent number: 4941497
    Abstract: A walker is disclosed to provide support for a person who would otherwise have great difficulty in moving around in a hospital or home setting. The walker includes a frame having pivotable wheels to enable movement of the frame. Support structure is suspended from the frame for holding the person. The support structure includes a seat on which the person can sit and a torso device for supporting the upper torso of the person.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: July 17, 1990
    Inventors: William R. Prather, Warren Wong, Palmer Hafdahl