Exhaust gas muffler
CA 2381497 A1 · Owner: Crombeen, Peter F. · Inventors: Crombeen, Peter F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An exhaust gas muffler for an engine, the exhaust gas muffler having a body, at least one inlet for the exhaust gas from the engine on the body a baffled chamber in the body to receive exhaust gas from the at least one exhaust gas inlet, at least one exhaust gas outlet from the baffled chamber to vent the exhaust gas from the baffled chamber at least one fresh-air inlet, on the body a heat exchange conduit extending into the baffled chamber between the fresh air inlet and the at least one exhaust gas outlet the heat, exchange conduit being sized and shaped to permit heat exchange between the fresh air and the exhaust gas in the baffled chamber and a fresh air, outlet on the heat exchange …
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 April 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2024.
- 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.