Patents by Inventor Robert D. Mangelsdorf, Jr.

Robert D. Mangelsdorf, 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).

  • Bolt carrier for a rifle
    Patent number: D883421
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 5, 2020
    Assignee: Guardian Defense, LLC
    Inventors: Dean G. Grommet, Robert D. Mangelsdorf, Jr.
  • Firing pin for a rifle
    Patent number: D883422
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 5, 2020
    Assignee: Guardian Defense, LLC
    Inventors: Dean G. Grommet, Robert D. Mangelsdorf, Jr.