Patents by Inventor Michael E. Hammer

Michael E. Hammer 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).

  • Dual hat can
    Patent number: D454688
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: March 26, 2002
    Assignee: Hammer Plastics, Inc.
    Inventors: James D. Russell, Michael E. Hammer