Patents by Inventor Edward J. Czwartacki

Edward J. Czwartacki 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).

  • Flexible closure device
    Patent number: 5081746
    Abstract: A flexible circular closure device with a wedge shaped tab protruding from the outer circumference which is utilized to close a container with a flap having an aperture defined in it by insertion of the tab into the aperture and wrapping the circular closure around the container which may be a folder, envelope or the like.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: January 21, 1992
    Inventor: Edward J. Czwartacki