Lighting and ventilating apparatus and method
CA 2487548 C · Owner: Broan-Nutone Llc · Inventors: Karst, Daniel L.; Craw, Gary J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Some embodiments of the present invention provide a combination lighting and ventilating apparatus for installation in a structure. The apparatus can include a main housing having a first aperture that defines a ventilating inlet and a light outlet a lamp housing recessed within the main housing having first and second apertures spaced a distance from one another and having a portion that extends outside of the main housing and a lamp recessed within the lamp housing and the main housing. In some embodiments the apparatus further includes a fan positioned to draw air into and through the first aperture of the lamp housing around the lamp, and through the second aperture of the lamp housing. …
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 12, 2004 and granted April 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.