Tongue retention device
CA 2373407 C · Owner: Dort, Leslie · Inventors: Dort, Leslie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for retaining a tongue in a predetermined position the device comprising, a flange having a first and second surface the flange further including a protrusion extending from the first surface of the flange; and an aperture formed through the first and second surfaces of the flange wherein the protrusion covers the aperture whereby the protrusion form a hollow chamber the hollow chamber is accessible through the aperture from the second side of the flange.
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
- Filed February 26, 2002 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2024.
- 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.