Orthodontic positioner with overbite or open bite correcting or relapse inhibiting capability
CA 1059350 A · Owner: Bergersen, Earl O. · Inventors: Bergersen, Earl O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an orthodontic tooth positioning appliance of the type wherein all teeth normally engage the isthmus of the tooth receiving troughs substantially concurrently the, thickness of the isthmus is either (a) increased at the anterior teeth, relative to the thickness at the posterior teeth, for correcting or preventing relapse of a correction for overbite or (b) decreased at the anterior teeth relative, to the thickness at the posterior teeth to correct for or prevent relapse of a correction for open bite.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.