Patents by Inventor Virginia Lisowski

Virginia Lisowski 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).

  • Adjustable walker cane
    Patent number: D437679
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: February 20, 2001
    Inventors: Virginia Lisowski, Walter E. Lisowski