Patents by Inventor Stefan SCHAIRER

Stefan SCHAIRER 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).

  • Conical countersink
    Patent number: 11185934
    Abstract: The invention relates to a conical countersink (10) having at least one main cutting edge (16-1, 16-2, 16-3) extending in an arc-shaped, in particular spiral-shaped manner.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: November 30, 2021
    Assignee: Guehring KG
    Inventor: Stefan Schairer
  • CONICAL COUNTERSINK
    Publication number: 20200038968
    Abstract: The invention relates to a conical countersink (10) having at least one main cutting edge (16-1, 16-2, 16-3) extending in an arc-shaped, in particular spiral-shaped manner.
    Type: Application
    Filed: July 29, 2019
    Publication date: February 6, 2020
    Applicant: GUERING KG
    Inventor: Stefan SCHAIRER