Portable heater
CA 2201522 A1 · Owner: Kaines, Michael D. · Inventors: Kaines, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable heater comprising a fire chamber vessel an outer enclosure containeraround the vessel for retaining it the container bottom being spaced below the vessel bottom to define a vertical space therebetween the container breadth being sufficiently greater than the vessel breadth to cause the container peripheral wall and the vessel peripheral wall to define a circumferential space therebetween an upright air flow control, member in the circumferential space spaced from the container peripheral wall to create convection air-flow, heat-insulating space between the control member and container peripheral wall, and having an upper discharge outlet; the control member being spaced from the …
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 1, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2019.
- 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.