Patents by Inventor Stefan Kettner

Stefan Kettner 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).

  • Stapler
    Patent number: D979362
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: February 28, 2023
    Assignee: ACCO Brands Corporation
    Inventors: Wolf Leonhardt, Stefan Kettner, Hans Georg Kloster
  • Stapler
    Patent number: D1023706
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 23, 2024
    Assignee: ACCO Brands Corporation
    Inventors: Wolf Leonhardt, Stefan Kettner, Hans Georg Kloster
  • Stapler
    Patent number: D1023707
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 23, 2024
    Assignee: ACCO Brands Corporation
    Inventors: Wolf Leonhardt, Stefan Kettner, Hans Georg Kloster
  • Stapler
    Patent number: D1024711
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 30, 2024
    Assignee: ACCO Brands Corporation
    Inventors: Wolf Leonhardt, Stefan Kettner, Hans Georg Kloster