Patents Assigned to AB John Sjoding
  • Device for tooth implantation
    Patent number: 5169308
    Abstract: A device for tooth implantation having a fixture part intended to be set into the jawbone, and a holder part to which the tooth crown is attached. The holder part can be screwed on the fixture part by an attachment screw, and a locking screw is disposed to lock the attachment screw for fastening the holder part to the fixture part and prevent unscrewing.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 8, 1992
    Assignees: AB John Sjoding, Credentus AB
    Inventor: Bjorn Kvist
  • Combined root canal file and grip handle
    Patent number: D304858
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: November 28, 1989
    Assignee: AB John Sjoding
    Inventor: Klas Tofft