Air distribution system
CA 2252987 C · Owner: Mill, Peter · Inventors: Tice, Richard; Mill, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air distribution unit for mounting in the wall or floor of a room having a plenum space behind said wall or floor, comprises a housing having an air inlet for communication with the plenum space and an air outlet; a blower between the air inlet and air outlet for drawing air from the plenum space and exhausting it through the air outlet into the room; and a grille assembly mounted over the air outlet. The grille assembly has aerodynamically profiled air distribution channels which may be circumferentially disposed, extending between the upper and lower surfaces thereof. The air distribution channels open out onto the upper surface of the grille assembly at a shallow angle in a radially …
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 November 8, 1991 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2013.
- 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.