Electric stove
CA 2075768 A1 · Owner: Koponen, Laila Tuulikki · Inventors: Koponen, Laila Tuulikki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric stove with thermal self-circulation of the room-air which is heated by means of electric resistors (7) placed in the core (6) of the stove. The stove is made of three or four casing elements (1) at the corners of which vertical gabels (2) form frames for air slots (3) through which some of the room-air flows into the stove where the vertical separation wall (4) partly conducts air through air slots (5) between metal sheets (9) to the core (6) of the stove and partly to the channel (8) between casing element (1) and metal sheets (9) which is open at its upper and lower end to the vertical air-flow on the outside around the core (6) when electric resitors (7) are activated.
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 August 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2014.
- 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.