Patents by Inventor George Knutsen

George Knutsen 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).

  • Wheelchair compatible lawn swing
    Patent number: 5938283
    Abstract: A free-standing lawn swing having a fold down platform which permits access by wheelchair bound users. A ramp platform pivots from a support platform. A crank arm linkage raises and lowers the ramp platform between reclined, loading, and raised, safety positions. A ground ramp section mates to the ramp platform.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: August 17, 1999
    Inventors: Martin Babcock, George Knutsen
  • Lawn swing
    Patent number: D366156
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: January 16, 1996
    Inventors: Martin Babcock, George Knutsen