Patents by Inventor Arthur O. Knutson

Arthur O. Knutson 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).

  • Bag
    Patent number: 4201299
    Abstract: A plastic bag is made from any suitable material, such as polyethylene film, with a perforated slit formed therein, so that the bag may be hung on a doorknob, hook, or the like. The bag may be used to protect a newspaper or other item intended to be left at a door.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: May 6, 1980
    Inventors: Robert L. Bumgarner, Arthur O. Knutson