Ring for orthodontic bracket
CA 1195157 A · Owner: Pletcher, Erwin C. · Inventors: Pletcher, Erwin C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A wire ring which can be fitted over tie wings of an orthodontic bracket, and then twisted into tight engagement with the bracket. A resulting twisted tail of the ring provides a hook and eyelet for anchoring auxiliary appliances such as springs or elastics to the bracket. If fitted over an arch wire engaged in the bracket, the ring also provides secure ligating of the arch wire to the bracket.
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 October 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2002.
- 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.