Orthodontic apparatus
CA 1250766 A · Owner: Guenzel, Hans · Inventors: Guenzel, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The wire of an orthodontic appliance is attached at either end to a tooth by means of a lock secured to a band passed around the tooth and having a U-shaped recess into which a retaining spring is set so that when the latch holding the wire is inserted the ends of the spring catch in notches on the latch thereby affording secure attachment and easy removal and replacement of the wire.
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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.