Reversible humidifier housing
CA 2243128 C · Owner: Williamson, Brian · Inventors: Menassa, Cherif; Benoît, Alain; Williamson, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reversible housing for a humidifier of the type for attachment to the ducts of a forced air heating system. The housing includes a sheet forming a, back wall, a pair of side walls and a top wall integrally hinged to the back wall and, pivotable through one-half turn with respect to the latter so as to take two operative positions both protruding forwardly of the back wall depending which one of the back wall faces is disposed flat against the duct. The back wall has a, central air passage opening bordered with flanges protruding from each of the back wall faces to connect with a duct opening. One of the side walls has a second air passage with flanges protruding from each of its two …
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 July 10, 1998 and granted July 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2020.
- 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.