Patents by Inventor Henry Duerst, Jr.

Henry Duerst, Jr. 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).

  • Pop top can opener
    Patent number: D297204
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: August 16, 1988
    Inventor: Henry Duerst, Jr.