Patents by Inventor Stig R. Zernell

Stig R. Zernell 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).

  • Pneumatic drill
    Patent number: D259392
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: June 2, 1981
    Assignee: Atlas Copco AB
    Inventors: Heino Elmessaar, Ronald J. Lundberg, Stig R. Zernell
  • Surface temperature loss measuring device
    Patent number: D300907
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: May 2, 1989
    Assignee: Svenska Matapparater F.A.B.
    Inventor: Stig R. Zernell