Scent-free wildlife blind
CA 2298086 C · Owner: Fargason, William H. · Inventors: Fargason, William H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a scent-free wildlife blind. .The blind comprises a room-like shelter having a door a plurality of, windows, a small vent near ground level and a flexible tube, extending from the top of the shelter to a height of approximately 30 feet from the ground. When the wind hits the shelter the, windspeed will be higher at the top of the tube than at the bottom vent. The pressure exerted by the wind on the air inside the shelter is inversely proportional. to the wind speed. Therefore the pressure difference will force air in through the bottom vent and out through the top of the tube, carrying the scent of the occupants out of the blind high enough so that. nearby animals will not …
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 2, 2000 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2022.
- 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.