Patents by Inventor Allan Willinger

Allan Willinger 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).

  • Aquarium filter cartridge
    Patent number: D307626
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: May 1, 1990
    Assignee: Willinger Brothers, Inc.
    Inventor: Allan Willinger