Patents by Inventor Margarete E. Rueppel

Margarete E. Rueppel 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).

  • Combined container and valve closure
    Patent number: D339528
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: September 21, 1993
    Assignee: Zeller Plastik GmbH
    Inventor: Margarete E. Rueppel