Ventilator system
CA 1303413 C · Owner: Burke, Edward H. · Inventors: Mueller, Kevin D.; Leone, Joseph D.; Burke, Edward H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A ventilator system comprising an exterior panel member and an interior baffle member in sealed engagement with a back side of the exterior panel member and at a plurality of vertically spaced locations whereby to define therebetween an air chamber. A first air passage is provided in the panel member and communicates with the air chamber. A second air passage is provided in the baffle member and communicates with the air chamber. A valve is provided within the air chamber which is acted upon by an air stream entering the air chamber through the first air passage to close off the air flow through the air chamber when the force of the air stream acting on the valve …
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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
- Granted June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.