Patents by Inventor Willem R. Nagtegaal

Willem R. Nagtegaal 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).

  • Drill bit
    Patent number: D936714
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: November 23, 2021
    Assignee: MIREKAJA A.G.
    Inventor: Willem R. Nagtegaal