Patents by Inventor Walter Pfizenmaier

Walter Pfizenmaier 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).

  • Closure strip for flexible-walled containers
    Patent number: 3973294
    Abstract: In a closure strip for retaining the open end of a flexible-walled container, such as a paper or plastic bag, in a closed condition, comprising one or more wire elements extending longitudinally of the strip and supported on a web of material, such as paper or plastics, the web is extending in at least one lateral direction to provide a large, substantially flat area on which information about the container contents can be enclosed.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: August 10, 1976
    Inventor: Walter Pfizenmaier